diff --git a/data/grid5000/sites/toulouse/network_equipments/gw.json b/data/grid5000/sites/toulouse/network_equipments/gw.json
index 12d91f321f325cf718e16f3ca02b67fd42219f45..9dcb896a003fa7fee82da00f82551d5438685d16 100644
--- a/data/grid5000/sites/toulouse/network_equipments/gw.json
+++ b/data/grid5000/sites/toulouse/network_equipments/gw.json
@@ -16,7 +16,7 @@
       "uid": "sw-estats"
     }
   },
-  "ip": "172.17.127.254",
+  "ip": "172.16.127.254",
   "ip6": "2001:660:4406:900::ffff:ffff",
   "kind": "router",
   "linecards": [
diff --git a/input/grid5000/sites/toulouse/networks/gw.yaml b/input/grid5000/sites/toulouse/networks/gw.yaml
index 706b5cd9b7349da87e09d6fbea348d968e4ec0cc..c7389bf49b5e9e2c621720c15a3b292041ef0a1c 100644
--- a/input/grid5000/sites/toulouse/networks/gw.yaml
+++ b/input/grid5000/sites/toulouse/networks/gw.yaml
@@ -4,7 +4,7 @@ gw:
   serial: SG27KMX1X6
   alias:
     - gw-toulouse
-  ip: 172.17.127.254
+  ip: 172.16.127.254
   ip6: 2001:660:4406:900::ffff:ffff
   kind: router
   managed_by_us: true