diff --git a/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-1.json b/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-1.json
index 1611ccfe447c974771f06e8f0d4bccca40a0f87e..04274702ebcc7050e87510921f218de701190505 100644
--- a/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-1.json
+++ b/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-1.json
@@ -112,7 +112,7 @@
       "interface": "InfiniBand",
       "ip": "172.18.54.1",
       "kavlan": false,
-      "mac": "00:00:10:86:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f6:f6",
+      "mac": "00:00:05:06:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f6:f6",
       "management": false,
       "model": "MT28908 Family [ConnectX-6]",
       "mountable": true,
diff --git a/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-2.json b/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-2.json
index 186f899344a1b3b12dde620b09309433520a68a9..ac2fce43102e1561e3ea17bae877618bcb8b6da6 100644
--- a/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-2.json
+++ b/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-2.json
@@ -112,7 +112,7 @@
       "interface": "InfiniBand",
       "ip": "172.18.54.2",
       "kavlan": false,
-      "mac": "00:00:10:86:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f7:06",
+      "mac": "00:00:09:06:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f7:06",
       "management": false,
       "model": "MT28908 Family [ConnectX-6]",
       "mountable": true,
diff --git a/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-3.json b/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-3.json
index 7473c41f2386d13e69ed50dd2ce33e8fd2e27236..7cc1698a9c78bdab17a5e9d97cd67200319c7450 100644
--- a/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-3.json
+++ b/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-3.json
@@ -112,7 +112,7 @@
       "interface": "InfiniBand",
       "ip": "172.18.54.3",
       "kavlan": false,
-      "mac": "00:00:10:86:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f6:f2",
+      "mac": "00:00:09:06:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f6:f2",
       "management": false,
       "model": "MT28908 Family [ConnectX-6]",
       "mountable": true,
diff --git a/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-4.json b/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-4.json
index 9723dc28a36fbbd4940406f47d6bb0992a21d026..50e9977e7edc0ffc1b3b44dfdc97b980026a4017 100644
--- a/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-4.json
+++ b/data/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-4.json
@@ -112,7 +112,7 @@
       "interface": "InfiniBand",
       "ip": "172.18.54.4",
       "kavlan": false,
-      "mac": "00:00:10:86:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:fa:66",
+      "mac": "00:00:03:06:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:fa:66",
       "management": false,
       "model": "MT28908 Family [ConnectX-6]",
       "mountable": true,
diff --git a/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-1.yaml b/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-1.yaml
index a2ff9eaae93760bc55f9c3535430bb80ed261c5c..6df3ec69c4361228d4475e0263d61d849f1119f4 100644
--- a/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-1.yaml
+++ b/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-1.yaml
@@ -49,7 +49,7 @@ pyxis-1:
       guid: '0xb8599f0300d1f6f6'
       interface: InfiniBand
       ip: 172.18.54.1
-      mac: 00:00:10:86:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f6:f6
+      mac: 00:00:05:06:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f6:f6
       management: false
       model: MT28908 Family [ConnectX-6]
       name: ib0
diff --git a/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-2.yaml b/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-2.yaml
index c386e7707afd77a9ddfc6a62522dada11a7da213..09d8c4df078a36f1e1f8ba73b6f7e63ddb4f6e28 100644
--- a/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-2.yaml
+++ b/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-2.yaml
@@ -49,7 +49,7 @@ pyxis-2:
       guid: '0xb8599f0300d1f706'
       interface: InfiniBand
       ip: 172.18.54.2
-      mac: 00:00:10:86:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f7:06
+      mac: 00:00:09:06:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f7:06
       management: false
       model: MT28908 Family [ConnectX-6]
       name: ib0
diff --git a/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-3.yaml b/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-3.yaml
index abc963add9a6e763e6976ca979611e5907868f30..8e165700afc7fc2efd8d8e8c3ddd3cada3a67452 100644
--- a/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-3.yaml
+++ b/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-3.yaml
@@ -49,7 +49,7 @@ pyxis-3:
       guid: '0xb8599f0300d1f6f2'
       interface: InfiniBand
       ip: 172.18.54.3
-      mac: 00:00:10:86:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f6:f2
+      mac: 00:00:09:06:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:f6:f2
       management: false
       model: MT28908 Family [ConnectX-6]
       name: ib0
diff --git a/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-4.yaml b/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-4.yaml
index b301152a5e9db1956b4173552677f0523b9f5901..6a7ce414ec5f5ea97991252627ae8e26e51b4ef4 100644
--- a/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-4.yaml
+++ b/input/grid5000/sites/lyon/clusters/pyxis/nodes/pyxis-4.yaml
@@ -49,7 +49,7 @@ pyxis-4:
       guid: '0xb8599f0300d1fa66'
       interface: InfiniBand
       ip: 172.18.54.4
-      mac: 00:00:10:86:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:fa:66
+      mac: 00:00:03:06:fe:80:00:00:00:00:00:00:b8:59:9f:03:00:d1:fa:66
       management: false
       model: MT28908 Family [ConnectX-6]
       name: ib0