diff --git a/data/grid5000/sites/sophia/clusters/mercantour4/mercantour4.json b/data/grid5000/sites/sophia/clusters/mercantour4/mercantour4.json
index 8ea101d3627bae1a20abc46aaa755d11772ffc56..a3d56a566231b8956a9a8d4ac302f2c6f45a29c1 100644
--- a/data/grid5000/sites/sophia/clusters/mercantour4/mercantour4.json
+++ b/data/grid5000/sites/sophia/clusters/mercantour4/mercantour4.json
@@ -2,7 +2,7 @@
   "boot_type": "uefi",
   "created_at": "Fri, 14 Mar 2025 00:00:00 GMT",
   "exotic": false,
-  "kavlan": false,
+  "kavlan": true,
   "manufactured_at": "2017-11-29",
   "metrics": [
     {
diff --git a/data/grid5000/sites/sophia/clusters/mercantour4/nodes/mercantour4-1.json b/data/grid5000/sites/sophia/clusters/mercantour4/nodes/mercantour4-1.json
index d0d85bc9c44b89134300b85b42e2c29573a49c5f..2a829450c51fdad00cbaf10a6bfaa6c481467277 100644
--- a/data/grid5000/sites/sophia/clusters/mercantour4/nodes/mercantour4-1.json
+++ b/data/grid5000/sites/sophia/clusters/mercantour4/nodes/mercantour4-1.json
@@ -20,6 +20,50 @@
     "warranty_end": "2024-11-29"
   },
   "exotic": false,
+  "kavlan": {
+    "eth0": {
+      "kavlan-1": "192.168.196.41",
+      "kavlan-11": "10.7.229.41",
+      "kavlan-12": "10.11.229.41",
+      "kavlan-13": "10.15.229.41",
+      "kavlan-14": "10.19.229.41",
+      "kavlan-16": "10.27.229.41",
+      "kavlan-17": "10.31.229.41",
+      "kavlan-18": "10.35.229.41",
+      "kavlan-2": "192.168.212.41",
+      "kavlan-20": "10.43.229.41",
+      "kavlan-21": "10.47.229.41",
+      "kavlan-3": "192.168.228.41",
+      "kavlan-4": "10.32.4.41",
+      "kavlan-5": "10.32.68.41",
+      "kavlan-6": "10.32.132.41",
+      "kavlan-7": "10.32.196.41",
+      "kavlan-8": "10.33.4.41",
+      "kavlan-9": "10.33.68.41"
+    }
+  },
+  "kavlan6": {
+    "eth0": {
+      "kavlan-1": "2001:660:4406:880:3::29",
+      "kavlan-11": "2001:660:4406:1a0:803::29",
+      "kavlan-12": "2001:660:4406:2a0:803::29",
+      "kavlan-13": "2001:660:4406:4a0:803::29",
+      "kavlan-14": "2001:660:4406:5a0:803::29",
+      "kavlan-16": "2001:660:4406:7a0:803::29",
+      "kavlan-17": "2001:660:4406:9a0:803::29",
+      "kavlan-18": "2001:660:4406:8a0:803::29",
+      "kavlan-2": "2001:660:4406:881:3::29",
+      "kavlan-20": "2001:660:4406:3a0:803::29",
+      "kavlan-21": "2001:660:4406:6a0:803::29",
+      "kavlan-3": "2001:660:4406:882:3::29",
+      "kavlan-4": "2001:660:4406:890:3::29",
+      "kavlan-5": "2001:660:4406:891:3::29",
+      "kavlan-6": "2001:660:4406:892:3::29",
+      "kavlan-7": "2001:660:4406:893:3::29",
+      "kavlan-8": "2001:660:4406:894:3::29",
+      "kavlan-9": "2001:660:4406:895:3::29"
+    }
+  },
   "main_memory": {
     "ram_size": 1099511627776
   },
@@ -200,7 +244,7 @@
       "interface": "Ethernet",
       "ip": "172.16.130.41",
       "ip6": "2001:660:4406:800:3::29",
-      "kavlan": false,
+      "kavlan": true,
       "mac": "24:6e:96:81:28:dc",
       "management": false,
       "model": "I350 Gigabit Network Connection",
diff --git a/input/grid5000/sites/sophia/clusters/mercantour4/mercantour4.yaml b/input/grid5000/sites/sophia/clusters/mercantour4/mercantour4.yaml
index 86f953e3ce17c85d7d157fdda389a6126e92bd00..0a678703688bef0030ad45acd7e5eae0a5ed245b 100644
--- a/input/grid5000/sites/sophia/clusters/mercantour4/mercantour4.yaml
+++ b/input/grid5000/sites/sophia/clusters/mercantour4/mercantour4.yaml
@@ -1,7 +1,7 @@
 ---
 model: Dell PowerEdge R940
 created_at: 2025-03-14
-kavlan: false
+kavlan: true
 boot_type: uefi
 exotic: false
 queues: