diff --git a/data/grid5000/sites/grenoble/network_equipments/gw.json b/data/grid5000/sites/grenoble/network_equipments/gw.json
index d1d2167f984f192ffbc77877cadc46ab4cc29b8e..c1e7cc3d4a28a52b95f3e49c4772f81d00849b9b 100644
--- a/data/grid5000/sites/grenoble/network_equipments/gw.json
+++ b/data/grid5000/sites/grenoble/network_equipments/gw.json
@@ -411,6 +411,7 @@
           "uid": "troll-4"
         },
         {
+          "kavlan_pattern": "ethernet1/1/%PORT%",
           "kind": "node",
           "port": "eth0",
           "rate": 25000000000,
@@ -418,6 +419,7 @@
           "uid": "servan-1"
         },
         {
+          "kavlan_pattern": "ethernet1/1/%PORT%",
           "kind": "node",
           "port": "eth0",
           "rate": 25000000000,
diff --git a/input/grid5000/sites/grenoble/networks/gw-grenoble.yaml b/input/grid5000/sites/grenoble/networks/gw-grenoble.yaml
index d44dae773f538d501fffdf3cc3d133830a0f5df3..21d5336c9138e5cde5fa619a276111816db9f76f 100644
--- a/input/grid5000/sites/grenoble/networks/gw-grenoble.yaml
+++ b/input/grid5000/sites/grenoble/networks/gw-grenoble.yaml
@@ -190,10 +190,12 @@ gw:
         81:
           uid: servan-1
           snmp_pattern: "ethernet1/1/%PORT%"
+          kavlan_pattern: "ethernet1/1/%PORT%"
           rate: 25000000000
         82:
           uid: servan-2
           snmp_pattern: "ethernet1/1/%PORT%"
+          kavlan_pattern: "ethernet1/1/%PORT%"
           rate: 25000000000
         83:
           uid: port-channel10