diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-10.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-10.json
index a6b773b96de6bed7daf0ee5d280cebbf6cd58929..f3154d153aaddc9a57116db3dafa5a67e36a7e29 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-10.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-10.json
@@ -32,7 +32,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "172.16.176.10",
-      "mac": "00:19:b9:f2:0f:50",
+      "mac": "00:22:19:6d:85:0a",
       "management": false,
       "mountable": true,
       "mounted": true,
@@ -46,7 +46,7 @@
       "driver": "bnx2",
       "enabled": false,
       "interface": "Ethernet",
-      "mac": "00:19:b9:f2:0f:52",
+      "mac": "00:22:19:6d:85:0c",
       "rate": 1000000000
     },
     {
diff --git a/generators/input/luxembourg-granduc.yaml b/generators/input/luxembourg-granduc.yaml
index 2f50b5e2cb0bf8898625703aeffd0a371b368036..5281939d7d7a1328efe1c48e8aa6c25ba9ca7c4a 100644
--- a/generators/input/luxembourg-granduc.yaml
+++ b/generators/input/luxembourg-granduc.yaml
@@ -349,11 +349,11 @@ granduc-10:
       mac: 00:1c:23:d3:42:56
       ip: 172.17.176.10
     eth0:
-      mac: 00:19:b9:f2:0f:50
+      mac: 00:22:19:6d:85:0a
       ip: 172.16.176.10
       switch_port:
     eth1:
-      mac: 00:19:b9:f2:0f:52
+      mac: 00:22:19:6d:85:0c
       ip: 172.18.176.10
     eth2:
       mac: 00:1b:21:34:e1:3d