diff --git a/data/grid5000/sites/nancy/clusters/gres/nodes/gres-5.json b/data/grid5000/sites/nancy/clusters/gres/nodes/gres-5.json
index ee7e264baa4f0cb4d0d3bf7986a040c025757c32..a2a506efa58c8cf91f936cdad5c7102f8fdea0a5 100644
--- a/data/grid5000/sites/nancy/clusters/gres/nodes/gres-5.json
+++ b/data/grid5000/sites/nancy/clusters/gres/nodes/gres-5.json
@@ -199,7 +199,7 @@
       "interface": "Ethernet",
       "ip": "172.17.65.5",
       "kavlan": false,
-      "mac": "7c:a6:2a:4e:5e:dc",
+      "mac": "5c:ed:8c:01:2b:48",
       "management": true,
       "mountable": false,
       "mounted": false,
diff --git a/input/grid5000/sites/nancy/clusters/gres/nodes/gres-5.yaml b/input/grid5000/sites/nancy/clusters/gres/nodes/gres-5.yaml
index 3d6df229499bc5ebf528d048e415d642c37ec929..ee24418f5ac49b383d95752c3349a791727c4533 100644
--- a/input/grid5000/sites/nancy/clusters/gres/nodes/gres-5.yaml
+++ b/input/grid5000/sites/nancy/clusters/gres/nodes/gres-5.yaml
@@ -63,7 +63,7 @@ gres-5:
   network_adapters:
     bmc:
       ip: 172.17.65.5
-      mac: 7c:a6:2a:4e:5e:dc
+      mac: 5c:ed:8c:01:2b:48
       management: true
     eth0:
       driver: bnxt_en