diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-1.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-1.json
index c355dd8770f457fb37778b7b835e698e20cfda55..e7cd7781af143bec1bc60d60799d957d711ef0b3 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-1.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-1.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.1",
-      "mac": null,
+      "mac": "00:14:4f:20:90:18",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:90:19",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:90:1a",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:90:1b",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-10.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-10.json
index c031f705443b6a675551b3449130cadb16c993d0..5ae20dc3ad9eada59791e69b8cc7c2db95e3ede9 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-10.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-10.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.10",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:ac",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:ad",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:b2",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:b3",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-11.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-11.json
index fbd98cc2ef2758032ec5d43e6478e81767c0b8a5..5d9dc77252a6607b160468b98b857962d6ce602a 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-11.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-11.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.11",
-      "mac": null,
+      "mac": "00:14:4f:8d:13:98",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:8d:13:99",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:8d:13:9a",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:8d:13:9b",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-12.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-12.json
index 86ad83c27e79c87662a14b25e3c194320bacbfd7..30e6a2b1db978a3ba867dae66f3a5bb9759dbd64 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-12.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-12.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.12",
-      "mac": null,
+      "mac": "00:14:4f:1f:cc:00",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:cc:01",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:cc:06",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:cc:07",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-13.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-13.json
index 274b527ea3010689b63fac1e5ac9f20b4ec2837e..91faa3c2cb21265d702bb0e964fc30ae92e30a0c 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-13.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-13.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.13",
-      "mac": null,
+      "mac": "00:14:4f:20:c9:68",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c9:69",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c9:6a",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c9:6b",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-14.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-14.json
index 853da05135ee91039918e24cbd59433d78ee28b0..6df63117d638470dad3f835744c28db205196d5e 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-14.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-14.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.14",
-      "mac": null,
+      "mac": "00:14:4f:20:c9:1c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c9:1d",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c9:1e",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c9:1f",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-15.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-15.json
index f42cfc03ce09f92389668517483a45a7325b1897..2e1ef3b0b56aa783d5b3001cff27ed4a7e23cb99 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-15.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-15.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.15",
-      "mac": null,
+      "mac": "00:14:4f:20:8b:26",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8b:27",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8b:2c",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8b:2d",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-16.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-16.json
index 32f085e350869509607bea4a00f6d42c1f2361f8..118b807a71919fa4ea34737b138762096f760732 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-16.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-16.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.16",
-      "mac": null,
+      "mac": "00:14:4f:20:a8:ea",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:a8:eb",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:a8:f0",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:a8:f1",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-17.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-17.json
index 036afac23b0d8e0600a8cc440af933cab7c631ab..1c2c5059cbf9b865a3cd4fa3405eff309af4681b 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-17.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-17.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.17",
-      "mac": null,
+      "mac": "00:14:4f:1f:fc:24",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:fc:25",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:fc:2a",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:fc:2b",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-18.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-18.json
index 32ae7dcd601c57735ac0339438ef0605ce18e06c..f3b78c00152d522dc6ae27d8e49c5114ff11bc39 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-18.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-18.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.18",
-      "mac": null,
+      "mac": "00:14:4f:20:ca:78",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ca:79",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ca:7e",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ca:7f",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-19.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-19.json
index 1ba0028dd3d6111a7b360cca6ea1c199a005b75c..78ec6fd113f788a537d13f130f443a375bb15901 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-19.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-19.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.19",
-      "mac": null,
+      "mac": "00:14:4f:20:b7:5c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b7:5d",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b7:5e",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b7:5f",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-2.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-2.json
index 43318f025ee61ef50f637442574b6c29c1b9425d..444373b913cbf1be32426ca6afc45f397d52e0b3 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-2.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-2.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.2",
-      "mac": null,
+      "mac": "00:14:4f:20:89:60",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:61",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:66",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:67",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-20.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-20.json
index 53f49c84bd64737c2e4df21a2621880a904ea45a..8b4db1e8632d0230ebc5de120294a6ca0c09c8f9 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-20.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-20.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.20",
-      "mac": null,
+      "mac": "00:14:4f:20:8a:98",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8a:99",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8a:9e",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8a:9f",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-21.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-21.json
index 24bdfa7e385f02da4ce05e3966bd0c2f130f4b2f..015525b5bbc24993873fec609121e73c8369b17b 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-21.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-21.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.21",
-      "mac": null,
+      "mac": "00:14:4f:20:8c:00",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8c:01",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8c:06",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8c:07",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-22.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-22.json
index e882616d665de860f89bead3cbda6854a0af0703..d48e3621096a384a9582d0c9f1d5a8550c51197d 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-22.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-22.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.22",
-      "mac": null,
+      "mac": "00:14:4f:20:b7:28",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b7:29",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b7:2a",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b7:2b",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-23.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-23.json
index 568d154cccea074bfd8a0bbbd1b2caa8ebbb3e0f..3698732817f26cc264bfe95c750d03307d64564e 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-23.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-23.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.23",
-      "mac": null,
+      "mac": "00:14:4f:20:ac:ac",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ac:ad",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ac:b2",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ac:b3",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-24.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-24.json
index 823be14b6f6c617225f41ceb00660bd2ab3beb69..db85060fe9adee639afb066392bdfdf7b0df7493 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-24.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-24.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.24",
-      "mac": null,
+      "mac": "00:14:4f:1f:fc:ec",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:fc:ed",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:fc:f2",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:fc:f3",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-25.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-25.json
index 85a504431f514fbcde7c2fac0223fdbc73560c87..28b0014c6fb99761d4aa0786b3aa954be85d2cc8 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-25.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-25.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.25",
-      "mac": null,
+      "mac": "00:14:4f:20:89:e4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:e5",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:e6",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:e7",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-26.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-26.json
index 38d8d0e9f646cc46e166b21bb5b9c4cb9b46f680..edbd7cd6e4603dfca8688524a7edef10d43d0340 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-26.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-26.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.26",
-      "mac": null,
+      "mac": "00:14:4f:20:ad:f8",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ad:f9",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ad:fe",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ad:ff",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-27.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-27.json
index de680cb8b12e6b6e30b2b0430d8557792150925c..52737ae2c773825cdaec1334d48a3ab52fd8c99f 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-27.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-27.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.27",
-      "mac": null,
+      "mac": "00:14:4f:20:c0:88",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c0:89",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c0:8e",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c0:8f",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-28.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-28.json
index 6fb5d108f62d272a1c398856b6313b3447ed9d33..45b507c768572d4c1613e189c120852f652292a9 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-28.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-28.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.28",
-      "mac": null,
+      "mac": "00:14:4f:20:c6:f4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c6:f5",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c6:fa",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c6:fb",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-29.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-29.json
index e31af02a6bc874e1b2f82bc024bfae04605ebd5f..cf2a10cf25e39f99795412ffda338a7c51175a52 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-29.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-29.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.29",
-      "mac": null,
+      "mac": "00:14:4f:20:ca:44",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ca:45",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ca:46",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ca:47",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-3.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-3.json
index 0591b1259b1f1b714d330dca6dc16e9c7370bdcf..601cb2f6aa107aab8bb7114128f748204fb0bce1 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-3.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-3.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.3",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:4c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:4d",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:52",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:53",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-30.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-30.json
index 2f9c73a6d4b03705b7958063221e6efc452c46ab..786dd07b76b39eae96e101cb6caa93a729c569f2 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-30.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-30.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.30",
-      "mac": null,
+      "mac": "00:14:4f:1f:c3:b8",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:c3:b9",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:c3:ba",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:c3:bb",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-31.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-31.json
index b29fe022552ce3a9c27588b559141f8556053d70..d304273e16cbff1cc06fac33f1c01fc82b4e9464 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-31.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-31.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.31",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:12",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:13",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:18",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8d:19",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-32.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-32.json
index d3aac50403358b6499b5a4450fd0cf11ef09e005..3dbe37308d73fd648b24bf1be28c17c3cce10dc6 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-32.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-32.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.32",
-      "mac": null,
+      "mac": "00:14:4f:20:05:3c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:05:3d",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:05:3e",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:05:3f",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-33.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-33.json
index 956b49c7a6d85c2299de753e07e970e3fc0e407c..a2c8482cc456a25f0dcb3d09c0699b3de8c23839 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-33.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-33.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.33",
-      "mac": null,
+      "mac": "00:14:4f:20:ad:e0",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ad:e1",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ad:e6",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:ad:e7",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-34.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-34.json
index 4b56ce695e01e9f5e0356413c56de7c3301ca69c..6852091f31b9d3f96f83e66508a72792b01738da 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-34.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-34.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.34",
-      "mac": null,
+      "mac": "00:14:4f:20:af:1c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:af:1d",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:af:22",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:af:23",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-35.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-35.json
index f87e49976136a8518687bca969ebfab478cbf0ef..f9d59a322a2d5405b979cd2a0af4e4456281f770 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-35.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-35.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.35",
-      "mac": null,
+      "mac": "00:14:4f:20:8a:8a",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8a:8b",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8a:90",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8a:91",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-36.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-36.json
index 0852432a552808f1fc42cd8e4e6d5c433786d777..a455b17778c2d8a993ce741789746aef07e6a571 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-36.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-36.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.36",
-      "mac": null,
+      "mac": "00:14:4f:1f:ff:54",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:ff:55",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:ff:5a",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:ff:5b",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-37.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-37.json
index 9734c73dd2748a7ee2e73423fe6d18f5a4e9c587..7b79ea84452b099f8a5f20479bfde685a8389295 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-37.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-37.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.37",
-      "mac": null,
+      "mac": "00:14:4f:20:b0:5c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b0:5d",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b0:5e",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b0:5f",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-38.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-38.json
index 01dde4db110509bd3cd666e95bc13bd8b1345880..8bb1a516062c78f879bf316197ad3912dad53f2b 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-38.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-38.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.38",
-      "mac": null,
+      "mac": "00:14:4f:20:a9:74",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:a9:75",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:a9:76",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:a9:77",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-39.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-39.json
index 8cd8459a22dfc9ab57114d9f7278c1d5dd785fe3..963047fed9bda4c80e5bbc27d7ba74e1c22f915c 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-39.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-39.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.39",
-      "mac": null,
+      "mac": "00:14:4f:20:af:ac",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:af:ad",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:af:ae",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:af:af",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-4.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-4.json
index a71a79bb38f037ac1be57d83e4121825abca082c..79bdaf4952eb26d09c249e7b37c0867c38376376 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-4.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-4.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.4",
-      "mac": null,
+      "mac": "00:14:4f:20:c5:ca",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c5:cb",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c5:d0",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:c5:d1",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-40.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-40.json
index 28d931fb04bd418b590f8ffe9e7a976d8ba69a6d..cc3f56b9e57c90481ee81c749f395191e528ce34 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-40.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-40.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.40",
-      "mac": null,
+      "mac": "00:14:4f:20:bc:22",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:bc:23",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:bc:28",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:bc:29",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-41.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-41.json
index 626073635e8fe11f9c46265eb39c1b828e5106f7..bb95e32b7ab13ce996659d97ba92c7c80d00eca7 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-41.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-41.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.41",
-      "mac": null,
+      "mac": "00:14:4f:1f:e7:e4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:e7:e5",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:e7:e6",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:e7:e7",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-42.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-42.json
index 18fef186069b4353098fa9dce4db79830b6bd107..e42617b13dd8ae457674c4748eb5323dca850ec1 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-42.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-42.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.42",
-      "mac": null,
+      "mac": "00:14:4f:20:03:88",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:03:89",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:03:8a",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:03:8b",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-43.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-43.json
index 2545796af5cd041a286cdf6628ae9a34769d7f3f..df7ea79eda18ed29b562ee7f8902cdfc1b87df80 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-43.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-43.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.43",
-      "mac": null,
+      "mac": "00:14:4f:1f:ca:ba",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:ca:bb",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:ca:c0",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:ca:c1",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-44.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-44.json
index 227bb3deced3a967d96f46e88479feb13cab9aab..d2f7a17b0501ff63725d87fbd323e60a6a18957d 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-44.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-44.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.44",
-      "mac": null,
+      "mac": "00:14:4f:20:bf:4c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:bf:4d",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:bf:4e",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:bf:4f",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-45.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-45.json
index 3872f6065b7a544885f04b1bbcda78721968e7c0..001586d7b61bb5d9df5760eace08dd6b02ab1f8d 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-45.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-45.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.45",
-      "mac": null,
+      "mac": "00:14:4f:20:05:80",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:05:81",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:05:86",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:05:87",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-46.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-46.json
index 4458abf87d8412d09e0dd65d4ef8611eeded960d..06f0a842571231c6a3cfc621a3d3ff7237bc35df 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-46.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-46.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.46",
-      "mac": null,
+      "mac": "00:14:4f:20:8b:f4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8b:f5",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8b:fa",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:8b:fb",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-47.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-47.json
index 618af4f3e90bf996cb399ffa6d16ca49b269e319..60671ebaa256053913350210a2f6b8d30bdd3543 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-47.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-47.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.47",
-      "mac": null,
+      "mac": "00:14:4f:20:bf:c8",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:bf:c9",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:bf:ce",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:bf:cf",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-48.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-48.json
index 948baff93cc3de7681bff7e653e6dac2cc6f5599..db1f49877bedc649dd385f43f599ee3b5e106039 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-48.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-48.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.48",
-      "mac": null,
+      "mac": "00:14:4f:20:89:5e",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:5f",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:64",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:65",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-49.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-49.json
index 86efe651d9a312d69fa918103d9dd46553d95c06..e341bbf661815d9f18b1e2ef8abfcd6bb8570d60 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-49.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-49.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.49",
-      "mac": null,
+      "mac": "00:14:4f:20:b5:04",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b5:05",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b5:0a",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:b5:0b",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-5.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-5.json
index d3037d856326df078d924ae7defec64d645dc9d4..36f23d4d6e95d0df6425c496bdd3eaa42ee8f011 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-5.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-5.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.5",
-      "mac": null,
+      "mac": "00:14:4f:45:a6:9a",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:45:a6:9b",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:45:a6:9c",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:45:a6:9d",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-50.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-50.json
index 158dafeea92f5f9486b6ea5db4d132567087bbf6..63f8d11895e5174899adb85ceba461d4335b0f66 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-50.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-50.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.50",
-      "mac": null,
+      "mac": "00:14:4f:20:88:fe",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:88:ff",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:04",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:05",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-51.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-51.json
index 6c09e8a4c00e02835782bb3f1501c0d1bccaa3ef..813e748b5c1da0e2bcfde0af2537601a62a755a1 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-51.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-51.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.51",
-      "mac": null,
+      "mac": "00:14:4f:20:5f:e4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:5f:e5",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:5f:ea",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:5f:eb",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-52.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-52.json
index c82e73b62a8122765d464f61c8989e20a83a5783..b203e283760fa79bf81d8613a116eab47defb652 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-52.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-52.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.52",
-      "mac": null,
+      "mac": "00:14:4f:20:64:fe",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:64:ff",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:65:04",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:65:05",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-53.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-53.json
index b15f4eb888df5b291efbe430f26677cf977c58c6..cf645d2ba1f1cd372fff651c6f9d56cada0dd64f 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-53.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-53.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.53",
-      "mac": null,
+      "mac": "00:14:4f:1f:c8:48",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:c8:49",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:c8:66",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:c8:67",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-54.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-54.json
index 258a6035064988dccd75a92efad6c0cb846020ba..f1d9c77142d083607c809fb5b73c3e164fc12a73 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-54.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-54.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.54",
-      "mac": null,
+      "mac": "00:14:4f:20:5f:78",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:5f:79",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:5f:7e",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:5f:7f",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-55.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-55.json
index eebb2ad648e6c5ed8bcfa1dd4cc53a5ea1d4537c..a7f3b2b8fd7c6ce8de2edf1121684af95568c2fd 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-55.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-55.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.55",
-      "mac": null,
+      "mac": "00:14:4f:1f:c4:a4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:c4:a5",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:c4:a6",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:c4:a7",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-56.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-56.json
index 1dee162b2f5b5fc280620cdd015438aaecb3baef..9c1e643b30156d4d9ca97c69bb0db742631298f7 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-56.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-56.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.56",
-      "mac": null,
+      "mac": "00:14:4f:20:89:2c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:2d",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:32",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:33",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-6.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-6.json
index 0dec999be13d3bd78efd86d7fc0e84cf938190ac..f8d312ccf9e1966244a614d8ab6b59a154514271 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-6.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-6.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.6",
-      "mac": null,
+      "mac": "00:14:4f:1f:bd:24",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:bd:25",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:bd:26",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:bd:27",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-7.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-7.json
index fba770f99bfafcf970ae5d7128e044b4e559e6a8..22bd778fa0a0186219cc333e11799856803b25e5 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-7.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-7.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.7",
-      "mac": null,
+      "mac": "00:14:4f:20:89:74",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:75",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:76",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:89:77",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-8.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-8.json
index b04513f92a6190c6c2793b86fc767eae11e4914e..654e6c42956967c342816158c8e62da992179027 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-8.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-8.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.8",
-      "mac": null,
+      "mac": "00:14:4f:20:a8:b0",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:a8:b1",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:a8:b6",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:20:a8:b7",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-9.json b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-9.json
index 88a8ee99a5f22a18ca089ff5ef1010f11bdb6029..2cfd2bad1ccb95043838c0e3a3c20461d2f2672a 100755
--- a/data/grid5000/sites/sophia/clusters/helios/nodes/helios-9.json
+++ b/data/grid5000/sites/sophia/clusters/helios/nodes/helios-9.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.9",
-      "mac": null,
+      "mac": "00:14:4f:1f:e8:80",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -29,7 +29,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:e8:81",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -39,7 +39,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:e8:82",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
@@ -49,7 +49,7 @@
       "driver": "e1000",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:14:4f:1f:e8:83",
       "rate": 1000000000,
       "vendor": "Intel Corporation",
       "version": "82546EB"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-1.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-1.json
index f3e8e2e2b34061bb08bc1f6c3f442a96fd7380ed..37498fd03abe053d579d24bb25c9534111f4f4b6 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-1.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-1.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.1",
-      "mac": null,
+      "mac": "00:16:36:91:e7:d0",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e7:d1",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-10.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-10.json
index 21441eb18b72b202bad2ae716fdc4167b441eb47..1374679594de4509541cf673a4c1fe9f61e9d846 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-10.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-10.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.10",
-      "mac": null,
+      "mac": "00:16:36:91:eb:d0",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:d1",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-11.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-11.json
index 4bd530b52d9ed7016dcecadd92326fbc5eec8c28..cd351685b24b050eb416d1771496cee2a6ec769f 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-11.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-11.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.11",
-      "mac": null,
+      "mac": "00:16:36:91:e9:dc",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:dd",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-12.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-12.json
index 61ffdacefc9cee3588f27e694a287a982c11b7a4..bf12fd59c0a0afb769f7afeed2570c7d31e99a42 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-12.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-12.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.12",
-      "mac": null,
+      "mac": "00:16:36:91:eb:60",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:61",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-13.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-13.json
index d946fc782cdf59570a7933fbf567606dcd5c2007..bb56d10d294e3a66c74333d93454bb270928a006 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-13.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-13.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.13",
-      "mac": null,
+      "mac": "00:16:36:91:e8:5c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e8:5d",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-14.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-14.json
index b0716e0f43161f401aa3be5217cfd0104d9abac9..74b7e5c262a6e41838999b618721a2ee7928ca4d 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-14.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-14.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.14",
-      "mac": null,
+      "mac": "00:16:36:c9:fb:e4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:c9:fb:e5",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-15.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-15.json
index 0b6ee4cf24fa637e2b87388295a38fe0d711ec0f..5b1a9b63783d4e2c2b9c37ea10a90ca7d551ba87 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-15.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-15.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.15",
-      "mac": null,
+      "mac": "00:16:36:c9:fb:34",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:c9:fb:35",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-16.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-16.json
index 5904ec77e8e1458757a06e9472e7f96ac663d922..a8079b5821ad878f3ec9dbc159ab5f1fdd4d6045 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-16.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-16.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.16",
-      "mac": null,
+      "mac": "00:16:36:c9:fb:94",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:c9:fb:95",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-17.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-17.json
index 52fdcb03e5cad0d19d04cb46d0d9d526d8f1d1b1..4182ee9d97975de7e4f4a78a3dcd7aeab8e18c1e 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-17.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-17.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.17",
-      "mac": null,
+      "mac": "00:16:36:c5:8a:83",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:c5:8a:84",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-18.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-18.json
index 227ad4a4f4ced45f08ff1f0e80a35aee345b191f..16adf55f92ca91d0df07d93f2f9ef0cf2475dd2a 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-18.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-18.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.18",
-      "mac": null,
+      "mac": "00:16:36:91:ec:14",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ec:15",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-19.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-19.json
index 873533eca511043f5f69b1bfea0a39d54582bb81..b86e513526e0e15284f262a07733367ac441b9cf 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-19.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-19.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.19",
-      "mac": null,
+      "mac": "00:16:36:91:ea:c0",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ea:c1",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-2.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-2.json
index fcf22b302754bcacf4293f27565f6e63c1ccb6b6..0369696607bf8fc19cdd79e34b2859daf80f5675 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-2.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-2.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.2",
-      "mac": null,
+      "mac": "00:16:36:91:eb:84",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:85",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-20.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-20.json
index 115db114c12e5804f2583cda80694c37f6ac6576..033520d4cd8975d972133f3e993028140d0cdefd 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-20.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-20.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.20",
-      "mac": null,
+      "mac": "00:16:36:91:e9:74",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:75",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-21.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-21.json
index 69abb209ed0a65af3d90982d151aee556432a263..9a1f87c048cd48eac946f7f46a5d157289924095 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-21.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-21.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.21",
-      "mac": null,
+      "mac": "00:16:36:91:ec:24",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ec:25",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-22.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-22.json
index 5d65de3eee76fbb162a7d749f0556e1b479ce979..5729251242cc888a17779fb87b77e0f4f4b102c6 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-22.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-22.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.22",
-      "mac": null,
+      "mac": "00:16:36:91:e9:d8",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:d9",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-23.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-23.json
index b4103910f16bc800313103977f698b2b723a53ce..88f5565efae6b7bb9525f7c7589fa9ba65aa5f2f 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-23.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-23.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.23",
-      "mac": null,
+      "mac": "00:16:36:91:eb:1c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:1d",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-24.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-24.json
index d43a5bc46db50bfe76d1e4677b7545f27237d162..388e20219d7c36c3306901d2149737f780ec28a4 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-24.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-24.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.24",
-      "mac": null,
+      "mac": "00:16:36:91:e9:ec",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:ed",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-25.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-25.json
index 8454235967c0c3e5d597c06230501e4aed2055f8..1c59ded635790193b077ed5669b9ff8a7d9f453d 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-25.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-25.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.25",
-      "mac": null,
+      "mac": "00:16:36:91:eb:2c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:2d",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-26.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-26.json
index bd77e136b13e6df71a37934c481717e3e9964f61..f8a8c6e156923d65615643965d691fe3652bf3d9 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-26.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-26.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.26",
-      "mac": null,
+      "mac": "00:16:36:91:eb:d4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:d5",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-27.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-27.json
index 1650770c26273ce38259a55835e5cb5cde8f1da5..3604b6cfe29609d36acd1336c5d2f8179f9cf167 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-27.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-27.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.27",
-      "mac": null,
+      "mac": "00:16:36:91:e9:f0",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:f1",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-28.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-28.json
index 8ea322309e6bbf628ae27ecee32c77ea2d2e47da..2cbd828b34acd1750e170d95247bd3cfe8528719 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-28.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-28.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.28",
-      "mac": null,
+      "mac": "00:16:36:91:e8:2c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e8:2d",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-29.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-29.json
index 3bbdec755b8b6c232b0c71f7397fcdd3c8b8cea4..4e351cc057e54f9ce161c9c2b54add26da4fe29d 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-29.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-29.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.29",
-      "mac": null,
+      "mac": "00:16:36:91:e8:dc",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e8:dd",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-3.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-3.json
index a961602974a74d2d84786cf9508e376ca5876e70..23f21701203856136c3514c3c19b8175b2f43b0c 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-3.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-3.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.3",
-      "mac": null,
+      "mac": "00:16:36:91:eb:24",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:25",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-30.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-30.json
index 0e502a02e5e695ff2135fae73bc193bdc9613dcc..26e9555439c0ed460df464cc17956de45d5fe5a0 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-30.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-30.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.30",
-      "mac": null,
+      "mac": "00:16:36:91:ea:94",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ea:95",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-31.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-31.json
index e5b65a99dd554fb87288440c49de26175eb47b42..5bb5da52eda9773b0f24593d2bdb5beb43494c1a 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-31.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-31.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.31",
-      "mac": null,
+      "mac": "00:16:36:c9:f9:80",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:c9:f9:81",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-32.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-32.json
index 1ed03a80cdd7b129997c03bfea40827631b8b9fa..36fe02c9b65f8dadc088fbe82b596404550932a0 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-32.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-32.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.32",
-      "mac": null,
+      "mac": "00:16:36:91:e9:94",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:95",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-33.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-33.json
index 752562001d69f6b2cb22da28f112a3755c97e877..b223a6e5db286f9b6de198207e823057332a6f40 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-33.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-33.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.33",
-      "mac": null,
+      "mac": "00:16:36:91:ea:84",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ea:85",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-34.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-34.json
index 1f2a3e6de639119244e64d1711d633c1fee79dc9..d619e256d3246fbeb93dfd5c17295e9395c380bd 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-34.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-34.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.34",
-      "mac": null,
+      "mac": "00:16:36:91:eb:dc",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:dd",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-35.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-35.json
index d5903091cea4b9da0191872c68493c33ded7ef72..4e0587977fbfc46930f495f03e76fced1a1076e4 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-35.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-35.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.35",
-      "mac": null,
+      "mac": "00:16:36:91:ea:08",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ea:09",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-36.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-36.json
index b8ab7a9a9cbc4ae356631668520ad8f93d19236e..39420986a7dcaca2f8dadc032416f92e317c8901 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-36.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-36.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.36",
-      "mac": null,
+      "mac": "00:16:36:91:ea:08",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ea:09",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-37.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-37.json
index 432113c1f18848ae5a03e963afa347c688113578..00c783cf65ca426058bb0742d92b318fb4ef9aee 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-37.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-37.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.37",
-      "mac": null,
+      "mac": "00:16:36:91:e9:a4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:a5",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-38.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-38.json
index f2288f3c29bc551b9193d413979705e5c47f18e7..c5a8be754e25f7a8575d53c87f973b56b5bb94f8 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-38.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-38.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.38",
-      "mac": null,
+      "mac": "00:16:36:91:e8:6c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e8:6d",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-39.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-39.json
index 6d45bc147edd675f982cb9babf3a5ae28ed554a9..bb6dfc67e30e177c2843a775704d25af3258438a 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-39.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-39.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.39",
-      "mac": null,
+      "mac": "00:16:36:91:ec:20",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ec:21",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-4.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-4.json
index 463901af293aa31cb7f946e2b39d5a9d615333bb..7d8f18c9ecc27f678abd9414bbf50850713aca5b 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-4.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-4.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.4",
-      "mac": null,
+      "mac": "00:16:36:91:e9:d4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:d5",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-40.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-40.json
index 66a4a9ad047d67de5a76a80f1f26542707bbe9e4..9da71df7d2bd1a5be04d6ce41a62c39079eb796e 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-40.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-40.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.40",
-      "mac": null,
+      "mac": "00:16:36:91:eb:08",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:09",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-41.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-41.json
index 3e06c26cd4406cdc530bb048e5a1ef81a77c6da7..d60d251ca06535f37ea0ed1837fff38f41ebfe42 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-41.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-41.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.41",
-      "mac": null,
+      "mac": "00:16:36:91:ea:f8",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ea:f9",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-42.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-42.json
index a4695978cedbef7dda45364453fb7bc06bd3dd8b..fb7e325a13dd1f7b99a1352c30ef6261ea3797b2 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-42.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-42.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.42",
-      "mac": null,
+      "mac": "00:16:36:91:ea:90",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ea:91",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-43.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-43.json
index 2653a95a56dbb56aff02b4116ef4ea5590e23257..56abf46046aaa830de12f60051a291046302f75f 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-43.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-43.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.43",
-      "mac": null,
+      "mac": "00:16:36:91:ea:fc",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ea:fd",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-44.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-44.json
index d301f8682f7c882d6541f0a153c7dd73251d1e16..2cbf19c5b8d7b39eaffdd433761cff3c7c6711fe 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-44.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-44.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.44",
-      "mac": null,
+      "mac": "00:16:36:91:e9:18",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:19",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-45.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-45.json
index 235da71a642d85f3f260bb7869c07012c8e34d46..04536cae16b30164e80f269faeab24fee2e75f68 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-45.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-45.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.45",
-      "mac": null,
+      "mac": "00:16:36:91:e9:58",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:59",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-46.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-46.json
index b10e1e81df0d1b6570cddf493464616b9238d1b5..bbd874fbcf7da61115f57c18c039a2bfec41bb0e 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-46.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-46.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.46",
-      "mac": null,
+      "mac": "00:16:36:91:eb:80",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:81",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-47.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-47.json
index 41b05b43481fc33ee3fd29c607d8754a27c938be..51e07818e1fb8dbf8bf2be03767e75f63af8e0b4 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-47.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-47.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.47",
-      "mac": null,
+      "mac": "00:16:36:e9:26:c6",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:e9:26:c7",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-48.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-48.json
index 622a475791fb5a631ab38e0d3781c62d95c9d3ed..c887e2908fb079cc760ce8cf40e553ce6c554318 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-48.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-48.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.48",
-      "mac": null,
+      "mac": "00:16:36:91:eb:28",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:eb:29",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-49.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-49.json
index 9af56e12969c9fe4cfb825aa36b03c0356820fd5..3e812dbc00c9911e71090e0d2f1f288b86a86968 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-49.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-49.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.49",
-      "mac": null,
+      "mac": "00:16:36:c5:89:17",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:c5:89:18",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-5.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-5.json
index 199c08c3a734ff2bde3922e35495c50f16b29856..7cc8ebcbcc02c7177ad5bc2351a17e409234c741 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-5.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-5.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.5",
-      "mac": null,
+      "mac": "00:16:36:91:e8:e8",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e8:e9",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-50.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-50.json
index 1fc58640c3bed9c92afde86ba2687e330b5f9025..001e4b9e5588dbeed398a72ac7d5e7296612b74d 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-50.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-50.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.50",
-      "mac": null,
+      "mac": "00:16:36:91:e9:e0",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:e1",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-6.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-6.json
index fbd942fbe78fd4d428e48bc8ed525853ad8c69cb..2c2308cbce1dbfb171aee7d3f0017b165b301d86 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-6.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-6.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.6",
-      "mac": null,
+      "mac": "00:16:36:91:e8:70",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e8:71",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-7.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-7.json
index eb59864502b6c8751bc419cf54c2b1302ece3f38..e27b604cd5bee20e2fb2a9ed463fbca8186c1262 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-7.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-7.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.7",
-      "mac": null,
+      "mac": "00:16:36:91:ea:d4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:ea:d5",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-8.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-8.json
index 8902d2d1c317b8e313b5d922b7c72f0b87ad9f65..d45a67ee2ebee9bf89177e9c23ba27144b2e687e 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-8.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-8.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.8",
-      "mac": null,
+      "mac": "00:16:36:c5:8a:87",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:c5:8a:88",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-9.json b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-9.json
index 62b3c040c79c9f01be05f45fb5248d056d3234bc..f435669cb3d933076bc9a3c7f8c98f64025952c2 100755
--- a/data/grid5000/sites/sophia/clusters/sol/nodes/sol-9.json
+++ b/data/grid5000/sites/sophia/clusters/sol/nodes/sol-9.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.22.9",
-      "mac": null,
+      "mac": "00:16:36:91:e9:90",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "forcedeth",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:16:36:91:e9:91",
       "rate": 1000000000,
       "vendor": "nVidia",
       "version": "MCP55 Pro"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-1.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-1.json
index 03928a20865199bbc5724cef6e86b2a958cf05dc..31a67851f6f15251afb04e74b47e8e87eb5fcd40 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-1.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-1.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.101",
-      "mac": null,
+      "mac": "00:26:b9:58:e6:82",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:58:e6:82",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-10.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-10.json
index dd83aa1927492f3676877431b08ae66b147a82d3..4ab826078dcfadc87f768271ca42af42d5a9a01d 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-10.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-10.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.110",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:65",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:65",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-11.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-11.json
index 65c47dbe6cb99860af7d7cfcfcc57bd83a2ac3bc..602256215a0f7ba03fa048dbef4a4f239783d377 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-11.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-11.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.111",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:0c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:0c",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-12.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-12.json
index 2dfab89ef45a4bce36c9ed518591c69334d2de21..c58628671760c10bb92cbb5ab87f4849c84397b3 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-12.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-12.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.112",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:5c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:5c",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-13.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-13.json
index c2152a408a52e14d62c5c465b9a69dd88040ffe2..e80af800734fad60bc04b29814e77e3e8749d23f 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-13.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-13.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.113",
-      "mac": null,
+      "mac": "00:26:b9:3f:4c:78",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4c:78",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-14.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-14.json
index 48b6ed4bd5eb8c30ee1a983c26e15fa8c1acf8fa..c1325e64dc501710887b7dadaaff8bb4de64f781 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-14.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-14.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.114",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:61",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:61",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-15.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-15.json
index 2daf0b37d837c89dd55bee6e92d1261cde3d47d2..5c70fa4bd7910a5578db2f252d997c3833d353c9 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-15.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-15.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.115",
-      "mac": null,
+      "mac": "00:26:b9:3f:44:89",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:44:89",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-16.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-16.json
index 181850ef5ddc70ce5e7d30eb1da0aeeb89b83ffe..d4d20c7acf81771aaa63ed800fe7b0c88d0fdb43 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-16.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-16.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.116",
-      "mac": null,
+      "mac": "00:26:b9:3f:41:0c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:41:0c",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-17.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-17.json
index e6edfa463cf2b8d211a4115317320d72fa750061..15e3360cfcee700ff027434afa939d55c7a7178d 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-17.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-17.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.117",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:db",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:db",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-18.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-18.json
index 8733fa36203dbf84e5e8f1e0f81b75e196a2990e..c063821fc3dc55e8dd2e7536f09f9f3d5f95decb 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-18.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-18.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.118",
-      "mac": null,
+      "mac": "00:26:b9:35:c4:83",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:35:c4:83",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-19.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-19.json
index 0a8846f1992287a9fef3e281259b3b0c56fe4ffa..ff37cd47b7a86ab7c6fa1bc3548f319e308ace30 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-19.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-19.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.119",
-      "mac": null,
+      "mac": "00:26:b9:3f:40:67",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:40:67",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-2.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-2.json
index f9ee756aa11bd4864d4d6a41a811d7663bba1f5f..27e879d2592cd1b3f1811290cc852afb10af6e04 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-2.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-2.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.102",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:38",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:38",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-20.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-20.json
index 3465183a0949d225493c6c62894378d86bf96d8c..16561887412d3e4ae53d35dfe5ee9060f8177d61 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-20.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-20.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.120",
-      "mac": null,
+      "mac": "00:26:b9:3f:46:12",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:46:12",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-21.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-21.json
index af617cda08a0522ee705b77db10b5933a78bd88d..a97333761f4a301423778b4a898b15a4fb05dc78 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-21.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-21.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.121",
-      "mac": null,
+      "mac": "00:26:b9:3f:3f:fb",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:3f:fb",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-22.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-22.json
index 3d6de7da81ddb998417812e1155c2ce27ab27acb..8370e31e53b9576155210d43daa4f1689b7681fb 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-22.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-22.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.122",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:66",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:66",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-23.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-23.json
index cf3d1b5b024bdfa6002e4d241ce514534f70c509..bb274f68954205b17a75295c7d07f7f02f96fb0d 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-23.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-23.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.123",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:dc",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:dc",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-24.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-24.json
index 80937631b8238dc0d5dd46afa658cb7a0336a566..cd98d80400c855b18d079466f5a65900f00fbca9 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-24.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-24.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.124",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:b4",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:b4",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-25.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-25.json
index 7cbfa8cb54bd4ff2a1b2832c106e451a92891700..ac6941b322a2f2d255dc179fbde8c881f1f50ad2 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-25.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-25.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.125",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:a2",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:a2",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-26.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-26.json
index eb03153c3df7c6d2e55041333e24d08d1ed50c5e..f29c23e2685b02b39e825224a01ff5c7e5055b51 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-26.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-26.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.126",
-      "mac": null,
+      "mac": "00:26:b9:3f:4b:4d",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4b:4d",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-27.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-27.json
index 57dea573a809340f708c01ed0a69ded53e540259..b03ef8f2b2749f7d2cb6a4abb4f4c7340d9aac1c 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-27.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-27.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.127",
-      "mac": null,
+      "mac": "00:26:b9:3f:4b:62",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4b:62",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-28.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-28.json
index 185ec58dd7305fdbf8e138238edb378a0090e558..c179e36558c1daceb8b6e39cec406efcb8857deb 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-28.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-28.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.128",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:56",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:56",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-29.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-29.json
index 4cf6ca94eece6d35f3d8d6d1046947c64a1ff22e..f5f189fbd626a05c1f4a8b9835857b245c221393 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-29.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-29.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.129",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:ba",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:ba",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-3.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-3.json
index 4bf111279b56358179c23c03fbd28702aad233ed..c37c8f431d05b989c7fca73c72e1a2e28be30af1 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-3.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-3.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.103",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:5e",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:5e",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-30.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-30.json
index b29c6032c2fb4be1a907b211822b3272ae695380..1ef9acce1522caf1f76338cfe7b84d52583f0c27 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-30.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-30.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.130",
-      "mac": null,
+      "mac": "00:26:b9:3f:41:30",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:41:30",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-31.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-31.json
index 8ab3524068e932a272caf172ffe793e39c2d1d4b..1fa2b889d97f90c6a8efc4826e3fe3ba80f2fc61 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-31.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-31.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.131",
-      "mac": null,
+      "mac": "00:26:b9:3f:4b:56",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4b:56",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-32.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-32.json
index 06797a9bb097ec7ea9e5c0aab922f6a7fa8b81a3..8fe6fc58d363191fec236b6c0e1669fb1a2b0b57 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-32.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-32.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.132",
-      "mac": null,
+      "mac": "00:26:b9:3f:44:68",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:44:68",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-33.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-33.json
index 8a19d2b801e72bdc2ae74750c72ab957a89e3f81..5735abfb11548b801fba66eb90c3565428549289 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-33.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-33.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.133",
-      "mac": null,
+      "mac": "00:26:b9:3f:3f:67",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:3f:67",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-34.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-34.json
index f03a0179a99b9fcd020a9ed0bdbd71ddcb203b15..67530e01b5e3ee62fa936bdde023ff8da99f6b03 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-34.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-34.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.134",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:5f",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:5f",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-35.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-35.json
index 135b97b7f4a39e90fb8029581655d16e55023b88..e5089fe6fa93f667856d952f6c44f8f4a324003c 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-35.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-35.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.135",
-      "mac": null,
+      "mac": "00:26:b9:3f:3f:1c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:3f:1c",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-36.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-36.json
index 0fac1435c0c71b86343ce00010882e0b2d9b7906..f65cc97cb83988e79540bc1b04f72f7f76bda2c6 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-36.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-36.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.136",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:94",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:94",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-37.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-37.json
index d3fe6169bbd1184429937660385b1eba2b5c2706..13d8b5e049b17ec608c72bdcfd9472c763b98d96 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-37.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-37.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.137",
-      "mac": null,
+      "mac": "00:26:b9:3f:4b:2c",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4b:2c",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-38.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-38.json
index a6217efc1096304caeed2469aacd07227948d2b9..f97d1f2cb7ad2dc912db221aece0b925c15be3bc 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-38.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-38.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.138",
-      "mac": null,
+      "mac": "00:26:b9:3f:44:b3",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:44:b3",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-39.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-39.json
index b361c478b36c265a578f3a0eefed88f2ec1d53d1..763ae636e4606203a242a38013e42821b55efbc4 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-39.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-39.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.139",
-      "mac": null,
+      "mac": "00:26:b9:3f:4b:2f",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4b:2f",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-4.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-4.json
index 07998958c54e3fcf9f2b714829a2d0d9fc879324..e73fa34bee3ba78c0daad28f510cfd0f56a5076c 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-4.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-4.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.104",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:6d",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:6d",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-40.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-40.json
index 4fe9136ceb985354b8e2cdc8c95734a9a393efc7..2e514a369644c3f12ac6c3085871e2310b679fa2 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-40.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-40.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.140",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:44",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:49:44",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-41.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-41.json
index df69b0645547b4b34083b16a888c74e158368250..153e6446ee9bb5f3acfbdac844bd337eeaab88ed 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-41.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-41.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.141",
-      "mac": null,
+      "mac": "00:26:b9:3f:45:3a",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:45:3a",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-42.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-42.json
index cc7466ef6c2bb24ee4bdbb64f17ba58e0ab9c31c..b7227afd8bb3d5301169a92d408710229f93dc1d 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-42.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-42.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.142",
-      "mac": null,
+      "mac": "00:26:b9:3f:41:21",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:41:21",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-43.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-43.json
index 7be9e2b832eba62c08062b9871f3284e890b5f24..579be178d4a243d6efa89b48eeb472999313a3bf 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-43.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-43.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.143",
-      "mac": null,
+      "mac": "00:26:b9:3f:3e:95",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:3e:95",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-44.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-44.json
index 1eb08bda16fc5d9efffb6951bdc51afe74d4f5c0..5d472f0e39d62b066f853a0432e99f3d216bdf8e 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-44.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-44.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.144",
-      "mac": null,
+      "mac": "00:26:b9:3f:45:2e",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:45:2e",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-45.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-45.json
index 9693dee655602132de87b7ad9e988b81c3b46774..9e78db10fcbfdd32c76e9243b34a0b1b239b5da6 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-45.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-45.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.145",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:7b",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:47:7b",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-5.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-5.json
index 6c11d9585854c04d3e2f8812affcc395e7ef0a76..6557c1dd306a3ec94a06f69a7e9a1952c6dc61a0 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-5.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-5.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.105",
-      "mac": null,
+      "mac": "00:26:b9:3e:e8:58",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3e:e8:58",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-6.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-6.json
index d09c450436a1c0b5b25af41fe65c53c8f5ee4928..3046dd6fe581e4ab9155e6fcc8d9726bc759085e 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-6.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-6.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.106",
-      "mac": null,
+      "mac": "00:26:b9:3f:40:af",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:40:af",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-7.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-7.json
index 8612f4d0cfde245d17b0bf86f36f1f4d82b633b2..b13df9317561866051a4ab6bb2b49c079bf24a67 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-7.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-7.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.107",
-      "mac": null,
+      "mac": "00:26:b9:3f:43:a1",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:43:a1",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-8.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-8.json
index 9e1cb1db0640cd1f382758a5b219498ef6242df8..1ea1611fa6a55fa475c2040561c335d7603cd182 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-8.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-8.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.108",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:3d",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:4a:3d",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-9.json b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-9.json
index 5a66997605788542102e69462a5a5617a9b6c9d2..a064d83d8cf9fc1c4b34d5f10c3ccaff69d6cf8e 100644
--- a/data/grid5000/sites/sophia/clusters/suno/nodes/suno-9.json
+++ b/data/grid5000/sites/sophia/clusters/suno/nodes/suno-9.json
@@ -15,7 +15,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "138.96.21.109",
-      "mac": null,
+      "mac": "00:26:b9:3f:41:27",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -30,7 +30,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": null,
+      "mac": "00:26:b9:3f:41:27",
       "rate": 1000000000,
       "vendor": "Broadcom",
       "version": "NetXtremeII BCM5716"
diff --git a/generators/input/sophia.rb b/generators/input/sophia.rb
index be83766ef2a21d152bac99a8fa39f6bbc351b880..7d6f0ba58d80b8c79552248e63553c57d0237f72 100755
--- a/generators/input/sophia.rb
+++ b/generators/input/sophia.rb
@@ -62,7 +62,7 @@ site :sophia do |site_uid|
         network_adapters [{
             :interface => 'Ethernet',
             :rate => 1.G,
-            :mac => nil,
+            :mac => lookup('sophia',"#{node_uid}", 'mac_eth0'),
             :vendor => 'Intel Corporation',
             :version => '82546EB',
             :enabled => true,
@@ -76,7 +76,7 @@ site :sophia do |site_uid|
           },{
             :interface => 'Ethernet',
             :rate => 1.G,
-            :mac => nil,
+            :mac => lookup('sophia',"#{node_uid}", 'mac_eth1'),
             :vendor => 'Intel Corporation',
             :version => '82546EB',
             :enabled => false,
@@ -85,7 +85,7 @@ site :sophia do |site_uid|
           },{
             :interface => 'Ethernet',
             :rate => 1.G,
-            :mac => nil,
+            :mac => lookup('sophia',"#{node_uid}", 'mac_eth2'),
             :vendor => 'Intel Corporation',
             :version => '82546EB',
             :enabled => false,
@@ -94,7 +94,7 @@ site :sophia do |site_uid|
           },{
             :interface => 'Ethernet',
             :rate => 1.G,
-            :mac => nil,
+            :mac => lookup('sophia',"#{node_uid}", 'mac_eth3'),
             :vendor => 'Intel Corporation',
             :version => '82546EB',
             :enabled => false,
@@ -160,7 +160,7 @@ site :sophia do |site_uid|
         network_adapters [{
             :interface => 'Ethernet',
             :rate => 1.G,
-            :mac => nil,
+            :mac => lookup('sophia',"#{node_uid}", 'mac_eth0'),
             :vendor => 'nVidia',
             :version => 'MCP55 Pro',
             :enabled => true,
@@ -175,7 +175,7 @@ site :sophia do |site_uid|
           },{
             :interface => 'Ethernet',
             :rate => 1.G,
-            :mac => nil,
+            :mac => lookup('sophia',"#{node_uid}", 'mac_eth1'),
             :vendor => 'nVidia',
             :version => 'MCP55 Pro',
             :enabled => false,
@@ -243,7 +243,7 @@ site :sophia do |site_uid|
         network_adapters [{
             :interface => 'Ethernet',
             :rate => 1.G,
-            :mac => nil,
+            :mac => lookup('sophia',"#{node_uid}", 'mac_eth0'),
             :vendor => 'Broadcom',
             :version => 'NetXtremeII BCM5716',
             :enabled => true,
@@ -258,7 +258,7 @@ site :sophia do |site_uid|
           },{
             :interface => 'Ethernet',
             :rate => 1.G,
-            :mac => nil,
+            :mac => lookup('sophia',"#{node_uid}", 'mac_eth0'),
             :vendor => 'Broadcom',
             :version => 'NetXtremeII BCM5716',
             :enabled => false,