diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-1.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-1.json
index 93fbe1eec57ee24eebac357e493a1c4474a592d9..8d42f4ea3f6f3d45a62d062f6ed979b40d4a35de 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-1.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-1.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "1",
"interface": "InfiniBand",
"ip": "192.168.210.1",
- "mac": "C903000318F0",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-10.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-10.json
index 45e0c664aafa0ae97a9384769fa3bb1b750ca75e..f626008278fe79874a1882521a783602db1528b0 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-10.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-10.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "10",
"interface": "InfiniBand",
"ip": "192.168.210.10",
- "mac": "C90300027F58",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-11.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-11.json
index fbdae33f35442b593f912c72aac54b15ca0da91b..d21d5333c732ac250f1bf17ce48e17a7588808f2 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-11.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-11.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "11",
"interface": "InfiniBand",
"ip": "192.168.210.11",
- "mac": "C90300028008",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-12.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-12.json
index b951b7b215bd15d71ebc1add6855a062dc951128..fab982950f2d53ac3f86e362cc22d9766fec3592 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-12.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-12.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "12",
"interface": "InfiniBand",
"ip": "192.168.210.12",
- "mac": "C903000280DC",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-13.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-13.json
index e5321baa1ed6d99e0cd1db61f237ecee567bb036..ab744ee2f0255c13fa83c333a75018f331e2d9cc 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-13.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-13.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "1",
"interface": "InfiniBand",
"ip": "192.168.210.13",
- "mac": "C903000280BC",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-14.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-14.json
index 87c6c45f9ddae153f47548d8da949eee990f29ab..abde58c9ab963fecff0429904abb6b24ade5e3ad 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-14.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-14.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "2",
"interface": "InfiniBand",
"ip": "192.168.210.14",
- "mac": "C903000280CC",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-15.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-15.json
index b9e47e5e3e9e32af3136ed8bd4e727f12c88826e..411372436c57f06d67aad14d6ae324569530487e 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-15.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-15.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "3",
"interface": "InfiniBand",
"ip": "192.168.210.15",
- "mac": "C903000280B4",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-16.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-16.json
index 714ed3c05cd6c668268c300001f2bebeec76e412..00a7f82741ca708010152cde2c8bb61c8e211035 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-16.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-16.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "4",
"interface": "InfiniBand",
"ip": "192.168.210.16",
- "mac": "C9030003303E",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-17.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-17.json
index 4effcd1fb25088a79651a4168259277644efc4e5..9ac9f5d9bf4d4b688b2ffe934545f8bbbb7da330 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-17.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-17.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "5",
"interface": "InfiniBand",
"ip": "192.168.210.17",
- "mac": "C90300033016",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-18.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-18.json
index 529fd322dce65a7c14b5bc5af95577bad4ba4d8e..bc3460370556858cd23d270cda56ed96490dae05 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-18.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-18.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "6",
"interface": "InfiniBand",
"ip": "192.168.210.18",
- "mac": "C9030003302A",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-19.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-19.json
index ebe1ace03f10b7e1fb7963aa2c8b8751cc53b8e8..13ec2d73986c6c7a8e62bf1b24064ea4db43f905 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-19.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-19.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "7",
"interface": "InfiniBand",
"ip": "192.168.210.19",
- "mac": "C90300033036",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-2.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-2.json
index 51d10845ff6ef1212ead9fd24365babdeb1003e8..4a35217f631bae712cbc7078b3d3b114648434cc 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-2.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-2.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "2",
"interface": "InfiniBand",
"ip": "192.168.210.2",
- "mac": "C90300028064",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-20.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-20.json
index 38dec89c74e6fa844c317263856322843cd14e4c..0f46c1496eae9a6bb6aed3d0dae2dd57c0e7ae9e 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-20.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-20.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "2",
"interface": "InfiniBand",
"ip": "192.168.210.20",
- "mac": "C90300032FCA",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-21.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-21.json
index 4d3524caf1a04b6061f0d196edecaa1fd56d578b..928dd1459117540ca1aa126f4cde8f724ab520f2 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-21.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-21.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "1",
"interface": "InfiniBand",
"ip": "192.168.210.21",
- "mac": "C9030003304E",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-22.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-22.json
index 4a0bbaa44f9f3b179ff8443882ef1f439597e822..cfb5093928122aa9ea12bd347b2e2e921ea64e40 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-22.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-22.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "3",
"interface": "InfiniBand",
"ip": "192.168.210.22",
- "mac": "C90300033032",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-23.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-23.json
index 43dc4992ffa3c8351f056ddf183b93f61dcd74bd..623ff21f377af639db8f2d802b78688d58e90c16 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-23.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-23.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "4",
"interface": "InfiniBand",
"ip": "192.168.210.23",
- "mac": "C9030003302F",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-24.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-24.json
index 92f0a7c4d5621f5b6362497ab87640e8bc2dec3a..23f81dac05010e322e9ddbe9095e1f5bd8c67282 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-24.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-24.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "5",
"interface": "InfiniBand",
"ip": "192.168.210.24",
- "mac": "C90300032FD6",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-25.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-25.json
index 4cb736f77bf07f6d1c86f47a452c3a521df22e6b..17f7ab5f218a66dda749f2144e45f098b58975b0 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-25.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-25.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "6",
"interface": "InfiniBand",
"ip": "192.168.210.25",
- "mac": "C90300033022",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-26.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-26.json
index 9292c1111073d046b475a2082f6ecec3ef3d5942..8ee00c0f5a9c19ed81692e0b4686cf060e76cd8a 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-26.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-26.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "7",
"interface": "InfiniBand",
"ip": "192.168.210.26",
- "mac": "C90300032FD2",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-27.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-27.json
index 0025bff8cbb63b5e4437383621d1b156e8db177b..e2fcd284fce73747b13d2ff0c07bea1dff269f2d 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-27.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-27.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "8",
"interface": "InfiniBand",
"ip": "192.168.210.27",
- "mac": "C9030003301E",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-28.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-28.json
index e5990dd030cd34291ae678591cf25f88c573271b..18f4fbf03add8aa5a5ccb70bc1983bbaef67a4ff 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-28.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-28.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "9",
"interface": "InfiniBand",
"ip": "192.168.210.28",
- "mac": "C90300032FDA",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-29.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-29.json
index 5f86af62ef407730176fd6656034d238dcaa58b4..cf19263da2ce273bd39ee4f95ec40f5c77a937dd 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-29.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-29.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "10",
"interface": "InfiniBand",
"ip": "192.168.210.29",
- "mac": "C90300033042",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-3.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-3.json
index 875aff1abb7c13a83b3ed753f9f6ad35980b8ec5..176f38229b59103149594091c1ac36f0aee9c48b 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-3.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-3.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "3",
"interface": "InfiniBand",
"ip": "192.168.210.3",
- "mac": "C90300027F60",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-30.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-30.json
index ea8bd889276282d5e8383e930ffc4908bf36cdd2..2e2bd1bf3daf15856e802c79851c36bdc9cb1e28 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-30.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-30.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "1",
"interface": "InfiniBand",
"ip": "192.168.210.30",
- "mac": "C9030003303A",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-31.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-31.json
index 9bc07d1dd778b5aec1c04284d6d2562b06fd1d80..db6be46e4935c215fb086ca7cc6e3ec4f8edff28 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-31.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-31.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "2",
"interface": "InfiniBand",
"ip": "192.168.210.31",
- "mac": "C9030003305E",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-32.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-32.json
index fa2fa8952b9fc9d04f9f7378ac21a499ebb99342..520f587abb1ab78188740ff62300bc65ca1d3925 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-32.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-32.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "3",
"interface": "InfiniBand",
"ip": "192.168.210.32",
- "mac": "C9030003305A",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-33.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-33.json
index da9ace46e109c48909a026be41a219dab0893999..57cdb75dad2387eb67e198d6a7d24e72928da577 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-33.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-33.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "4",
"interface": "InfiniBand",
"ip": "192.168.210.33",
- "mac": "C90300033056",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-34.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-34.json
index b17ef941e4af27f195539cfff124e6cbf3bcb42c..427b0a333c1f69a4f167159c9b167a709a75ec9c 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-34.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-34.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "5",
"interface": "InfiniBand",
"ip": "192.168.210.34",
- "mac": "C90300033052",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-35.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-35.json
index ec68b6e5ddcc038643390431b60fbfeeed3d7d76..520ab76e52be154e7f60d46c2f9fa8437ed2f6dc 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-35.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-35.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "6",
"interface": "InfiniBand",
"ip": "192.168.210.35",
- "mac": "C9030003304A",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-36.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-36.json
index bed8879a5be1f584b6a2b49de61cb741046d5226..d0a32689b4f2392ff4cc8234f18a8d684f56d507 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-36.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-36.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "7",
"interface": "InfiniBand",
"ip": "192.168.210.36",
- "mac": "C9030003301A",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-37.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-37.json
index 3520851991bd27debabdb2a35b5dd2e6750a5b2b..141c1aa92daa53ba5633f68e3dec9e09edcb7cd3 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-37.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-37.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "8",
"interface": "InfiniBand",
"ip": "192.168.210.37",
- "mac": "C90300028058",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-38.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-38.json
index c4316861376283cfd1455d4441a6bbcf63f1cce9..1d1d15b6d53654cba5871f144e1118a14623eb5d 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-38.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-38.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "9",
"interface": "InfiniBand",
"ip": "192.168.210.38",
- "mac": "C903000318DC",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-39.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-39.json
index f197ecb8986c7fa3f5798700730f4df31dad796c..c4a225d725b6e6d1e729f28d6514c7b47abaa595 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-39.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-39.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "10",
"interface": "InfiniBand",
"ip": "192.168.210.39",
- "mac": "C903000318E8",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-4.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-4.json
index d5aa7824beecbdaa9cf75409f7e54ee945bbeda0..1409d79f04d5411367274b505d668de9f9cbffbf 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-4.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-4.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "4",
"interface": "InfiniBand",
"ip": "192.168.210.4",
- "mac": "C90300028068",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-40.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-40.json
index c57417797ac8ff140372de733e0d0f622718d59e..e90124c5e0b13302e40e8b086da66f8ede2b76f7 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-40.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-40.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "11",
"interface": "InfiniBand",
"ip": "192.168.210.40",
- "mac": "C90300031780",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-41.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-41.json
index cea1d7d5b611959115b9b661c0b6155cfb971f04..834ee76dc42e358e13f9fd39f95431821f2a5ca3 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-41.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-41.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "12",
"interface": "InfiniBand",
"ip": "192.168.210.41",
- "mac": "C903000317D4",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-42.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-42.json
index 02b43998d1268031932e59bf96ab9415f25b1aba..0653099e509f70f2d76faeb55591531959847d6e 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-42.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-42.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "1",
"interface": "InfiniBand",
"ip": "192.168.210.42",
- "mac": "C903000280D0",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-43.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-43.json
index d0ea969275bccba993babe6b8ccf39b372608476..14eb003e11c6a9166c4537252abf93ed956b5464 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-43.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-43.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "2",
"interface": "InfiniBand",
"ip": "192.168.210.43",
- "mac": "C903000280B8",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-44.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-44.json
index e8a9913c2d797b7349b938213fa8fded775174eb..c2a2a98caf7d4f044d65e5c582b0f98434d7ea20 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-44.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-44.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "3",
"interface": "InfiniBand",
"ip": "192.168.210.44",
- "mac": "C903000280D4",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-45.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-45.json
index 9b2c0705d283213f6b7aeff2395a98c86d42e355..80f6e9434f70c2398f3a5a04ebc874030c87e745 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-45.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-45.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "4",
"interface": "InfiniBand",
"ip": "192.168.210.45",
- "mac": "C903000280B0",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-46.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-46.json
index 24fdda6bed82e46f3e2411d21207b0037ea1ec9a..27935ae175b336cdd74155f7f8592a1c845da567 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-46.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-46.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "5",
"interface": "InfiniBand",
"ip": "192.168.210.46",
- "mac": "C903000280A8",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-47.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-47.json
index 1d25f1ae2d76623c12d98814c8377a576b538733..c50948edab46e4ece29cc7caba7ecce837f9e42f 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-47.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-47.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.47",
- "mac": "C903000318E0",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-48.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-48.json
index ec1f8ec044466d0b2ec544002966639976835b8c..901be999c79f7ad182e86c46acad6f8f5ccaabbc 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-48.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-48.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "7",
"interface": "InfiniBand",
"ip": "192.168.210.48",
- "mac": "C903000317A4",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-49.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-49.json
index cccfb3d82a1e845b5100a0936feb7d2704d0a3cb..1f75bf43686edae7e8007b7bd3c889b9603ec06f 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-49.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-49.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "8",
"interface": "InfiniBand",
"ip": "192.168.210.49",
- "mac": "C90300033026",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-5.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-5.json
index 3022a7f88097ac63ccc9ffb7c49b1124b3b5c191..e56cdf7749bb0c5a8967341cd4a4cb39b38970b6 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-5.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-5.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "5",
"interface": "InfiniBand",
"ip": "192.168.210.5",
- "mac": "C903000280C0",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-50.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-50.json
index f856d4d69db7dc85e518ddb45cc6614093035bc1..5d796c5c990b2a61c1d9abe288d9f4bce1cc4486 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-50.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-50.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "9",
"interface": "InfiniBand",
"ip": "192.168.210.50",
- "mac": "C903000318D0",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-51.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-51.json
index 8a07bfd28e40ee74535779e4b65edb42fd0a4a01..fecfc70eeee810356712a5613c404d7e6d3b985d 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-51.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-51.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "10",
"interface": "InfiniBand",
"ip": "192.168.210.51",
- "mac": "C903000318EC",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-52.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-52.json
index 74b2aca49b0e0f0e38e384c8ebf2636d7a4d9c36..1fd75057693dd5561f8ce074eb7769d9319de7cb 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-52.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-52.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.52",
- "mac": "C90300027F84",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-53.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-53.json
index 22fdcbadf86c81cb84e304138cdb369c52edbb54..103a8b42ff0c3f0b5fae0b1a5b3afaf5953b7f76 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-53.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-53.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.53",
- "mac": "C903000280C4",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-54.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-54.json
index 0ca0d11001895ee9348254627b69074fd6a08664..7cb245d4a624406fa977d3cfc565137e1913b040 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-54.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-54.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.54",
- "mac": "C903000318C4",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-55.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-55.json
index 18a3df7a184f56afc38c86ee7c5cf8d1cb74de7e..6d8b8af4991087c332a7878709ff038a3ccdb4af 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-55.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-55.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.55",
- "mac": "C90300031784",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-56.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-56.json
index 73fe3d2eedd8e1688522a018af1bf12b1289401d..8bc80f5b609ed412d229f89d676c4bc73e6e31c0 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-56.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-56.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.56",
- "mac": "C9030003176C",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-57.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-57.json
index ffe9f0dbf0c84c9fdc8c503c76b058deb5c54e74..e79ef2fb328096c5b4ec7264698d6870bfae8046 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-57.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-57.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.57",
- "mac": "C9030003173C",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-58.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-58.json
index 155ebc195df923672710104dbfa56381437edd91..98181af246bebe06075ce18612d4b0ae2402a4f8 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-58.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-58.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.58",
- "mac": "C9030003179C",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-59.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-59.json
index 48e85ddb88c957e8be787e19c691b13bec61fe56..8a3e7d9e2e36b8682092390ff88a2b06eeb57cce 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-59.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-59.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "5",
"interface": "InfiniBand",
"ip": "192.168.210.59",
- "mac": "C90300031730",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-6.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-6.json
index 8443da84fba30208b075831735d3d58fd431049e..dea7ed8dc871e466c01abfebce7e0e92ca4603a6 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-6.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-6.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "6",
"interface": "InfiniBand",
"ip": "192.168.210.6",
- "mac": "C903000280AC",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-60.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-60.json
index 0ff95471b97bd4cbf68ef32266cffbeb93771549..66692bc71493f17873dc65f552e1316f329cee9e 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-60.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-60.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "6",
"interface": "InfiniBand",
"ip": "192.168.210.60",
- "mac": "C90300031740",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-61.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-61.json
index 855c2cdc97f9299091687af095224c8b77dd6615..5b1e05231d1526b229a82884bb3d94da6d875dd8 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-61.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-61.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "7",
"interface": "InfiniBand",
"ip": "192.168.210.61",
- "mac": "C90300031804",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-62.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-62.json
index b092f9c322860474e754032f5d71a7675175265e..1ef7a477f71f768224667b78d43f8e8baee49bcf 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-62.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-62.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "8",
"interface": "InfiniBand",
"ip": "192.168.210.62",
- "mac": "C9030003185C",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-63.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-63.json
index b916b16e594bcde195f758631561c596f6723fd6..7109ca9641428f0e07bbdf4de3223d7c43337fa3 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-63.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-63.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "9",
"interface": "InfiniBand",
"ip": "192.168.210.63",
- "mac": "C903000317B4",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-64.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-64.json
index 0a15ea5eefff647c89f6752f2d990f1f1a236288..fa0b4aa9ac1a4ca13f511d65c1f1adfb16622bad 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-64.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-64.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "10",
"interface": "InfiniBand",
"ip": "192.168.210.64",
- "mac": "C90300033012",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-65.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-65.json
index 8e829a9162495ce711effd02b7578cb9b2f15c1b..667592802740799a503ee2f3a5353b01db190443 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-65.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-65.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "11",
"interface": "InfiniBand",
"ip": "192.168.210.65",
- "mac": "C90300031750",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-66.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-66.json
index 4d1ce722374b74d3223ecc709a7ea278542108b7..5c6e354b87740fc41631c6a73b4207f91ba18373 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-66.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-66.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "12",
"interface": "InfiniBand",
"ip": "192.168.210.66",
- "mac": "C90300031968",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-67.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-67.json
index e5e9afd663eb54bbed60d557136d11dacc851b11..098a9feeec812095bdd342c158c976970f8c0487 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-67.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-67.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "1",
"interface": "InfiniBand",
"ip": "192.168.210.67",
- "mac": "C903000317DC",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-68.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-68.json
index ee5e4c7aff0946c37cb8df7c7b3bba1335ec90ce..1957968eec5f16acf02818f8653d81915397e5b4 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-68.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-68.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "2",
"interface": "InfiniBand",
"ip": "192.168.210.68",
- "mac": "C90300031858",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-69.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-69.json
index 80ddbdaf04aba4c0375c400da4d9344f2b255446..d94372aca96ee2f3f829ff1b38cde2fadc368b6f 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-69.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-69.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "3",
"interface": "InfiniBand",
"ip": "192.168.210.69",
- "mac": "C903000317B0",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-7.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-7.json
index 89c6ff69e83fb3a2dd6d026d4a95dbec007e6c6e..f607974d57021899d5bd01ee94e3f70f451a432c 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-7.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-7.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "7",
"interface": "InfiniBand",
"ip": "192.168.210.7",
- "mac": "C90300028054",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-70.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-70.json
index 5ee9e740c6a8a182679ceefe4625e44457ae7849..ec312c05b17721af83aa9bd179139fd6af0b45b7 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-70.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-70.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "4",
"interface": "InfiniBand",
"ip": "192.168.210.70",
- "mac": "C90300031810",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-71.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-71.json
index ddfeb867e9a111e70d704db507ca44f0feb697df..e87d6673263469d8c94878e69160f23d25a39c92 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-71.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-71.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "5",
"interface": "InfiniBand",
"ip": "192.168.210.71",
- "mac": "C90300031824",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-72.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-72.json
index b959f9842f870e37de4a640c1acc8ca8c764ab49..17180da26066cbb7482e0f207105fe47d0c5c1b7 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-72.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-72.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "6",
"interface": "InfiniBand",
"ip": "192.168.210.72",
- "mac": "C90300032FCE",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-73.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-73.json
index 81611f635fb0e17360abf2a27753dfe9cdcd58e5..3d1f30763d42ace9f925340b69e95672de447a19 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-73.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-73.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "7",
"interface": "InfiniBand",
"ip": "192.168.210.73",
- "mac": "C903000319FC",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-74.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-74.json
index 6c3c596bd0f624a736dabc4063ee71a9a8cc126a..4fea8e734b83ff1d87bdd1a96731e02c1cd788ba 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-74.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-74.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "8",
"interface": "InfiniBand",
"ip": "192.168.210.74",
- "mac": "C90300031890",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-75.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-75.json
index 3e22d5d202aa7af0ac41aaf69c395fbdb05b9ae1..b35eb9d18ef7e7c8584d3e70eb6434d82e2ff2a6 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-75.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-75.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "9",
"interface": "InfiniBand",
"ip": "192.168.210.75",
- "mac": "C90300031874",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-76.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-76.json
index c179429798654d3976bf54952f2fce6881adf388..fc3a041d8d2be927ba7f2d523509db7a711b02aa 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-76.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-76.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "10",
"interface": "InfiniBand",
"ip": "192.168.210.76",
- "mac": "C90300031974",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-77.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-77.json
index c569736ffcf1335505589cc497b359aea6f226e4..8472bf257e53d645045b8390456a3efcebaa16b6 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-77.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-77.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "11",
"interface": "InfiniBand",
"ip": "192.168.210.77",
- "mac": "C903000318B8",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-78.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-78.json
index a4dfcbb964c9d5353660ddff683d807330ca3b83..c2bb19ad82710670317acc76f36154a49bb8abbd 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-78.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-78.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "12",
"interface": "InfiniBand",
"ip": "192.168.210.78",
- "mac": "C903000317AC",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-79.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-79.json
index 4165773d9ad7260445f5181422e2769104f891e6..f5918499f3642cac2c9bf2e3133b109b43379e17 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-79.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-79.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.79",
- "mac": "C90300031808",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-8.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-8.json
index a4593b291f6609d7305b9755a1b52eab6d09d9b3..16885bc5727857ec84d3fa319c4a7a4b4ccfb48c 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-8.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-8.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "8",
"interface": "InfiniBand",
"ip": "192.168.210.8",
- "mac": "C903000280C8",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-80.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-80.json
index 2d2ccfa2ea3d09d35a6f9beaa807424c88df715e..3615766e55767b4c2f3e2a207d34c6c736086056 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-80.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-80.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.80",
- "mac": "C90300031800",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-81.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-81.json
index 89ce345b4d643c1cbcf9c9c2493d5f2727f274fc..78ae51aa317b65e7015eca06d56a128ff67c2a50 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-81.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-81.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.81",
- "mac": "C90300031860",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-82.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-82.json
index ff175a81f8bd2d1e824371fa8fcd23a663f38d5e..9464b3b4322b27b719955c0eadf817d954e2d0f8 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-82.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-82.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.82",
- "mac": "C903000319F8",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-83.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-83.json
index 8fb796b03db5ba1b432bbeaaceb5d4bc871bef3c..340c3112ed781755d5c4cc43359b094ce7b66621 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-83.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-83.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "12",
"interface": "InfiniBand",
"ip": "192.168.210.83",
- "mac": "C903000319F4",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-84.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-84.json
index eea16dd191b3f1d731a03be2e9bf03bdec8158a3..080249806dcc47d0499384b6097f91dfc170dd9f 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-84.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-84.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.84",
- "mac": "C9030003180C",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-85.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-85.json
index e3059370f42d286a6396d9176a7c17657671f647..e803450684a080431389954cdab3e0ceb8d8429b 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-85.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-85.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.85",
- "mac": "C903000319F0",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-86.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-86.json
index 80d594e2717ba343f4a643f01fe48a730607ad08..6920de86cd2db124b5c03ae559ead3493ebbfa94 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-86.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-86.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.86",
- "mac": "C90300031A00",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-87.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-87.json
index 5161786ff60b366667e0d3de5b70f7db43001172..de847555a721efc16d64e0526a8cc073dae46990 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-87.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-87.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.87",
- "mac": "C90300031A04",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-88.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-88.json
index d0ab24a63ac1f756b47ca01dc6838ee1b6c86b9c..e17b956c48c94b5b2feb5cacc75280b7c488b9af 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-88.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-88.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.88",
- "mac": "C90300031A18",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-89.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-89.json
index 41daf620d4bc0a9f287e9f6caff5f7aff810d0c8..c6cb7b6f93f57cc6ba6aecab9d52f54a7a8b8f22 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-89.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-89.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.89",
- "mac": "C90300031A64",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-9.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-9.json
index d7e014672a8f2ca72531073ed072fee8df298e52..d0c4549b6981322d2560603351e396b390530728 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-9.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-9.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "9",
"interface": "InfiniBand",
"ip": "192.168.210.9",
- "mac": "C9030002805C",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-90.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-90.json
index 19bfcb6189b5a956388afdebca450a0137e72c2c..4b2c1576518d7c15709a2bbd7dde1899d924a817 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-90.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-90.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.90",
- "mac": "C90300031A20",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-91.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-91.json
index 6a9c5c9de78ca4c3abff38eb295b3921c02655f8..82632726ce431fbd1f6278e5350203b05dd4abb0 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-91.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-91.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.91",
- "mac": "C90300031A0C",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-92.json b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-92.json
index de214acfc6531e36228fdf32878461cad9c631a6..e4e46ef6876aca2e79be1492865235550b7ae275 100644
--- a/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-92.json
+++ b/data/grid5000/sites/nancy/clusters/griffon/nodes/griffon-92.json
@@ -46,7 +46,6 @@
"ib_switch_card_pos": "",
"interface": "InfiniBand",
"ip": "192.168.210.92",
- "mac": "C90300031A08",
"management": false,
"mountable": true,
"mounted": true,
diff --git a/generators/input/nancy.rb b/generators/input/nancy.rb
index a7aa33a7b74610f777f0f26ed36b9808ddba6d00..1a1ebc6643acbade9d9c8eb57e1f9d4669f9b977 100755
--- a/generators/input/nancy.rb
+++ b/generators/input/nancy.rb
@@ -170,7 +170,6 @@ site :nancy do |site_uid|
:mounted => true,
:mountable => true,
:management => false,
- :mac => lookup('nancy', "#{node_uid}", 'mac_ib'),
:ip => lookup('nancy', "#{node_uid}", 'ip_ib'),
:network_address => "#{node_uid}-ib0.#{site_uid}.grid5000.fr",
:switch => "ib_switch",