diff --git a/data/grid5000/sites/nancy/clusters/grvingt/nodes/grvingt-42.json b/data/grid5000/sites/nancy/clusters/grvingt/nodes/grvingt-42.json
index efd551da7a641df4dff287c761d9a75a6c8a3488..e760d5f1a0dc47f295e196ded7e53f71ecdd2621 100644
--- a/data/grid5000/sites/nancy/clusters/grvingt/nodes/grvingt-42.json
+++ b/data/grid5000/sites/nancy/clusters/grvingt/nodes/grvingt-42.json
@@ -74,7 +74,7 @@
       "firmware_version": "6.00 0x80003753 18.5.17",
       "interface": "Ethernet",
       "kavlan": false,
-      "mac": "3c:fd:fe:57:53:7a",
+      "mac": "3c:fd:fe:57:6b:da",
       "management": false,
       "model": "Ethernet Controller X710 for 10GbE SFP+",
       "mountable": false,
diff --git a/grid5000-all.json b/grid5000-all.json
index 43609f9933930e89f341df3ee51fb8434710a818..b64752f20dd0f91cc2d373a4d8e306dacf9ee0a2 100644
--- a/grid5000-all.json
+++ b/grid5000-all.json
@@ -151199,7 +151199,7 @@
                   "firmware_version": "6.00 0x80003753 18.5.17",
                   "interface": "Ethernet",
                   "kavlan": false,
-                  "mac": "3c:fd:fe:57:53:7a",
+                  "mac": "3c:fd:fe:57:6b:da",
                   "management": false,
                   "model": "Ethernet Controller X710 for 10GbE SFP+",
                   "mountable": false,
diff --git a/input/grid5000/sites/nancy/clusters/grvingt/nodes/grvingt-42.yaml b/input/grid5000/sites/nancy/clusters/grvingt/nodes/grvingt-42.yaml
index 947ce01236a2ef165ee699b779f6d10ad2d0aa8f..bcff48e32caa936b18cf6ceb2f39db4b18cc70a2 100644
--- a/input/grid5000/sites/nancy/clusters/grvingt/nodes/grvingt-42.yaml
+++ b/input/grid5000/sites/nancy/clusters/grvingt/nodes/grvingt-42.yaml
@@ -36,7 +36,7 @@ grvingt-42:
       driver: i40e
       firmware_version: 6.00 0x80003753 18.5.17
       interface: Ethernet
-      mac: 3c:fd:fe:57:53:7a
+      mac: 3C:FD:FE:57:6B:DA
       management: false
       model: Ethernet Controller X710 for 10GbE SFP+
       name: enp24s0f1