diff --git a/data/grid5000/sites/rennes/network_equipments/gw.json b/data/grid5000/sites/rennes/network_equipments/gw.json
index 49f221f10f4e222dea35a6728762a67a7fded941..9a5981ecf408abef01b8f0fc471e1f8bd1ec9883 100644
--- a/data/grid5000/sites/rennes/network_equipments/gw.json
+++ b/data/grid5000/sites/rennes/network_equipments/gw.json
@@ -23,7 +23,7 @@
       "uid": "swcore-01-rba"
     }
   },
-  "ip": "172.17.111.211",
+  "ip": "172.16.111.254",
   "ip6": "2001:660:4406:700::ffff:ffff",
   "kind": "router",
   "linecards": [
diff --git a/input/grid5000/sites/rennes/networks/gw-rennes.yaml b/input/grid5000/sites/rennes/networks/gw-rennes.yaml
index 61ed91bfe64d141dc88de18c80ba5e42c8a30739..530e8bb04002e4192bb1a3b5e7b58fc29254fcd2 100644
--- a/input/grid5000/sites/rennes/networks/gw-rennes.yaml
+++ b/input/grid5000/sites/rennes/networks/gw-rennes.yaml
@@ -6,7 +6,7 @@ gw:
   managed_by_us: true
   site: rennes
   snmp_community: public
-  ip: 172.17.111.211
+  ip: 172.16.111.254
   ip6: 2001:660:4406:700::ffff:ffff
   alias:
     - gw-rennes