diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-1.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-1.json
index c0e29c1129abbb9d010365e880be02d2a08d1bf0..abf395d32a69fe1ef13cfee773f89662f4cc10d3 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-1.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-1.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.1",
       "kavlan": true,
       "mac": "00:19:b9:f0:01:ca",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.1",
       "kavlan": false,
       "mac": "00:1b:21:34:e1:4b",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-10.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-10.json
index f6e04edf3166ed8b7d4c47079b490af5d425212b..bf5cf1b3285e0c959c36824233f8b5969d1a4533 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-10.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-10.json
@@ -95,7 +95,6 @@
       "driver": "bnx2",
       "enabled": true,
       "interface": "Ethernet",
-      "ip": "172.16.178.10",
       "kavlan": true,
       "mac": "00:22:19:6d:85:0c",
       "management": false,
@@ -112,7 +111,6 @@
       "driver": "ixgbe",
       "enabled": true,
       "interface": "Ethernet",
-      "ip": "172.16.179.10",
       "kavlan": false,
       "mac": "00:1b:21:34:e1:3d",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-12.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-12.json
index 96f10d29bf9a417ca426c9cc8dbc1fa4b3dfad21..0ea3e17ffb90b26c7df56105f7ea7728eedabfda 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-12.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-12.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.12",
       "kavlan": true,
       "mac": "00:19:b9:f2:0e:12",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.12",
       "kavlan": false,
       "mac": "00:1b:21:34:e1:1c",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-13.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-13.json
index b0150a4e7e9820e04450847c66f9ece4825c31d4..4ad2c766145935d5b53d30d74da9271014bd7169 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-13.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-13.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.13",
       "kavlan": true,
       "mac": "00:19:b9:f2:0e:58",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.13",
       "kavlan": false,
       "mac": "00:1b:21:3d:13:af",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-14.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-14.json
index 4bb5a1ce797209808e0b307cdd960a523b614ae9..966c902170ed3adba5b60b20b88f47a9a5e142d8 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-14.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-14.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.14",
       "kavlan": true,
       "mac": "00:19:b9:f2:03:bd",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.14",
       "kavlan": false,
       "mac": "00:1b:21:3d:11:f7",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-15.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-15.json
index cfd26003c86e4aa0ead8d0fa1b39f6d18c8bb57e..3a4c60dec6dde7574b223bab622ef71fdf8c79d4 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-15.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-15.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.15",
       "kavlan": true,
       "mac": "00:19:b9:f2:0e:30",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.15",
       "kavlan": false,
       "mac": "00:1b:21:34:e0:f1",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-16.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-16.json
index 4f074519d5812ddcd5be1dc278c05e72ab8b96cc..57451953e391e35c0aaf30968fc6107159420e9f 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-16.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-16.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.16",
       "kavlan": true,
       "mac": "00:19:b9:f2:0f:4d",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.16",
       "kavlan": false,
       "mac": "00:1b:21:34:e1:1a",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-17.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-17.json
index 6205d6ed03dd0b65d69dc8bc330bbc318b9cb660..b6dba2b96edd6194e417b3c0a104938391baf3ae 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-17.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-17.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.17",
       "kavlan": true,
       "mac": "00:19:b9:de:b9:1e",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.17",
       "kavlan": false,
       "mac": "00:1b:21:3c:87:71",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-18.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-18.json
index 9988356e5a7e42be70af4c04ff72a3479e27f311..d72f1d69a01b80cd1a59968a6145edcaa983a4a4 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-18.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-18.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.18",
       "kavlan": true,
       "mac": "00:19:b9:f3:ba:b2",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.18",
       "kavlan": false,
       "mac": "00:1b:21:34:e1:07",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-19.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-19.json
index 464288353f01ff110f8f18a6b1fe0ead01899d09..442c5b66ccb58fa69ac1a27a14b33d8b22677dbb 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-19.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-19.json
@@ -95,7 +95,6 @@
       "driver": "bnx2",
       "enabled": true,
       "interface": "Ethernet",
-      "ip": "172.16.178.19",
       "kavlan": true,
       "mac": "00:19:b9:f2:0e:df",
       "management": false,
@@ -112,7 +111,6 @@
       "driver": "ixgbe",
       "enabled": true,
       "interface": "Ethernet",
-      "ip": "172.16.179.19",
       "kavlan": false,
       "mac": "00:1b:21:3d:13:9b",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-2.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-2.json
index e99e3f1652ad1ececf29282e689f1eb73b2cb9a4..58ad9590e94244690b05fbb5e7c4257e86a56776 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-2.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-2.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.2",
       "kavlan": true,
       "mac": "00:19:b9:f0:01:d9",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.2",
       "kavlan": false,
       "mac": "00:1b:21:34:e1:35",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-20.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-20.json
index daed31421c9a6795812ea42e7fa63193dd798eb2..842bed5cc480fdf3a6a51a6f3601137227ee0dcd 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-20.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-20.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.20",
       "kavlan": true,
       "mac": "00:19:b9:f2:08:cc",
       "management": false,
@@ -118,7 +117,6 @@
       "bridged": false,
       "device": "eth2",
       "enabled": true,
-      "ip": "172.16.179.20",
       "kavlan": false,
       "mac": "00:1b:21:3d:13:27",
       "mountable": true,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-21.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-21.json
index 67c4c84f9e45fb80116eaeb10cc9bbd190485f57..6f6345ecd7706adab5e76c1f0c35add3484e42ca 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-21.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-21.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.21",
       "kavlan": true,
       "mac": "00:19:b9:f3:c2:7f",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.21",
       "kavlan": false,
       "mac": "00:1b:21:3d:13:7d",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-22.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-22.json
index c6b620c8c52cee2b1871293fb922cbf9cfb814e0..72cb4d66d4a171a47b79a8f57599d5c18e29a594 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-22.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-22.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.22",
       "kavlan": true,
       "mac": "00:19:b9:f3:ba:a8",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.22",
       "kavlan": false,
       "mac": "00:1b:21:34:e0:e7",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-3.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-3.json
index 142d62a0261da88d6e670730b9986c2405a04bdf..40beb9e2a803fe599518712ce8b24cde368931c9 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-3.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-3.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.3",
       "kavlan": true,
       "mac": "00:19:b9:f2:0e:85",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.3",
       "kavlan": false,
       "mac": "00:1b:21:3c:87:cb",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-4.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-4.json
index 4445e1d42f08e2f61c452fb39847797042f20d0f..e6b596cfc06684db0c9c1511de7f1f832f602cc8 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-4.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-4.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.4",
       "kavlan": true,
       "mac": "00:19:b9:f2:0a:e8",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.4",
       "kavlan": false,
       "mac": "00:1b:21:3d:12:e9",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-5.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-5.json
index 22b21b5c311b60b3543ffa146a457533a4ba8ecb..35aabe07f47398731a7fa192592551620d888a5c 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-5.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-5.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.5",
       "kavlan": true,
       "mac": "00:19:b9:f1:f8:0b",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.5",
       "kavlan": false,
       "mac": "00:1b:21:3d:12:d1",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-6.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-6.json
index bba825a23fd22a922d6ddd2094b02ce6952a810f..c24c8ca6c1d64ac33931791e0c969fbc32ab5746 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-6.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-6.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.6",
       "kavlan": true,
       "mac": "00:19:b9:f2:0c:82",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.6",
       "kavlan": false,
       "mac": "00:1b:21:3d:13:ab",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-7.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-7.json
index 38cce478c5167e1b209fabdf6d65e10a220f049f..07379cdda9ccd32a90471c236789265540f120c5 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-7.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-7.json
@@ -95,7 +95,6 @@
       "driver": "bnx2",
       "enabled": true,
       "interface": "Ethernet",
-      "ip": "172.16.178.7",
       "kavlan": true,
       "mac": "00:19:b9:f2:0e:71",
       "management": false,
@@ -112,7 +111,6 @@
       "driver": "ixgbe",
       "enabled": true,
       "interface": "Ethernet",
-      "ip": "172.16.179.7",
       "kavlan": false,
       "mac": "00:1b:21:34:e1:5f",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-8.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-8.json
index f691d7c57da4b6edb3da60bca2335cd1b3b3cb38..c627b6125fd01eaea2b293972c1ac55c3367eb8f 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-8.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-8.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.8",
       "kavlan": true,
       "mac": "00:19:b9:ee:11:4c",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.8",
       "kavlan": false,
       "mac": "00:1b:21:34:e1:8d",
       "management": false,
diff --git a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-9.json b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-9.json
index 5f8c3d3179fadd036640683bba292f7744191863..d1eaebf9904a246030f3ae4f862b5e4ac77d4067 100644
--- a/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-9.json
+++ b/data/grid5000/sites/luxembourg/clusters/granduc/nodes/granduc-9.json
@@ -100,7 +100,6 @@
       "enabled": true,
       "firmware_version": "6.4.5 bc 5.0.7 UMP 1.1.9",
       "interface": "Ethernet",
-      "ip": "172.16.178.9",
       "kavlan": true,
       "mac": "00:19:b9:f1:fc:4b",
       "management": false,
@@ -121,7 +120,6 @@
       "enabled": true,
       "firmware_version": "0xc7390000",
       "interface": "Ethernet",
-      "ip": "172.16.179.9",
       "kavlan": false,
       "mac": "00:1b:21:3d:14:31",
       "management": false,
diff --git a/input/grid5000/sites/luxembourg/clusters/granduc/granduc_ip.yaml.erb b/input/grid5000/sites/luxembourg/clusters/granduc/granduc_ip.yaml.erb
index 21d6bd27ce5f7c541bcf016429c71aafa04a7a09..2d4e051798820df92255344edf2d7589ad76fc5c 100644
--- a/input/grid5000/sites/luxembourg/clusters/granduc/granduc_ip.yaml.erb
+++ b/input/grid5000/sites/luxembourg/clusters/granduc/granduc_ip.yaml.erb
@@ -31,7 +31,6 @@ nodes:
                    )[i-1] %>
       eth1:
         mounted: false
-        ip: 172.16.178.<%= i %>
         mac: <%= %w(
                     00:19:b9:f0:01:ca
                     00:19:b9:f0:01:d9
@@ -58,7 +57,6 @@ nodes:
                    )[i-1] %>
       eth2:
         mounted: false
-        ip: 172.16.179.<%= i %>
         mac: <%= %w(
                     00:1b:21:34:e1:4b
                     00:1b:21:34:e1:35