diff --git a/data/grid5000/sites/grenoble/clusters/drac/nodes/drac-4.json b/data/grid5000/sites/grenoble/clusters/drac/nodes/drac-4.json
index 9331b05878f45fef4375b5c87e8f1ce9391ad315..31325ae00ad89dc5db29f1e10e806773e52350f8 100644
--- a/data/grid5000/sites/grenoble/clusters/drac/nodes/drac-4.json
+++ b/data/grid5000/sites/grenoble/clusters/drac/nodes/drac-4.json
@@ -24,7 +24,7 @@
       "enabled": true,
       "ip": "172.16.24.4",
       "kavlan": false,
-      "mac": "98:be:94:68:00:04",
+      "mac": "98:be:94:68:72:55",
       "mountable": true,
       "mounted": true,
       "network_address": "drac-4.grenoble.grid5000.fr",
@@ -74,7 +74,7 @@
       "interface": "Ethernet",
       "ip": "172.17.24.4",
       "kavlan": false,
-      "mac": "70:e2:84:14:00:04",
+      "mac": "70:e2:84:14:14:77",
       "management": true,
       "mountable": false,
       "mounted": false,
diff --git a/input/grid5000/sites/grenoble/clusters/drac/drac_ip.yaml.erb b/input/grid5000/sites/grenoble/clusters/drac/drac_ip.yaml.erb
index 5fede371126e443f9a3f2c334bd3ecaf0980b9ff..6ff10277f23c8c2d920f43322feda85335c08f3a 100644
--- a/input/grid5000/sites/grenoble/clusters/drac/drac_ip.yaml.erb
+++ b/input/grid5000/sites/grenoble/clusters/drac/drac_ip.yaml.erb
@@ -9,7 +9,7 @@ nodes:
                     98:be:94:68:1e:55
                     98:be:94:68:72:35
                     98:be:94:68:72:65
-                    98:be:94:68:00:04
+                    98:be:94:68:72:55
                     98:be:94:68:00:05
                     98:be:94:68:00:06
                     98:be:94:68:00:07
@@ -25,7 +25,7 @@ nodes:
                     70:e2:84:14:15:6d
                     70:e2:84:14:11:35
                     70:e2:84:14:15:79
-                    70:e2:84:14:00:04
+                    70:e2:84:14:14:77
                     70:e2:84:14:00:05
                     70:e2:84:14:00:06
                     70:e2:84:14:00:07