diff --git a/data/grid5000/sites/sophia/clusters/esterel12/nodes/esterel12-1.json b/data/grid5000/sites/sophia/clusters/esterel12/nodes/esterel12-1.json
index 1522faa2cb2d899726aeac1f4782b2aff66096fe..07cda3d35c63aea8923c2e5acda3a22dc8b110a9 100644
--- a/data/grid5000/sites/sophia/clusters/esterel12/nodes/esterel12-1.json
+++ b/data/grid5000/sites/sophia/clusters/esterel12/nodes/esterel12-1.json
@@ -169,6 +169,7 @@
       "firmware_version": "2.40.5030",
       "guid": "0xec0d9a03002b93a1",
       "interface": "InfiniBand",
+      "ip": "172.18.131.17",
       "kavlan": false,
       "mac": "80:00:02:08:fe:80:00:00:00:00:00:00:ec:0d:9a:03:00:2b:93:a1",
       "management": false,
@@ -176,6 +177,7 @@
       "mountable": true,
       "mounted": true,
       "name": "ibp130s0",
+      "netmask": "255.255.240.0",
       "network_address": "esterel12-1-ib0.sophia.grid5000.fr",
       "rate": 40000000000,
       "sriov": false,
diff --git a/input/grid5000/sites/sophia/clusters/esterel12/esterel12.yaml b/input/grid5000/sites/sophia/clusters/esterel12/esterel12.yaml
index fcf5de67756486eeacc396450bd801638fedc270..29fa124f3479586e725684baa3fda4e79596ee79 100644
--- a/input/grid5000/sites/sophia/clusters/esterel12/esterel12.yaml
+++ b/input/grid5000/sites/sophia/clusters/esterel12/esterel12.yaml
@@ -34,6 +34,7 @@ nodes:
         enabled: true
         mountable: true
         mounted: true
+        netmask: 255.255.240.0
     storage_devices:
       pci-0000:03:00.0-scsi-0:2:0:0:
         id: disk0