diff --git a/data/grid5000/sites/sophia/clusters/uvb/nodes/uvb-7.json b/data/grid5000/sites/sophia/clusters/uvb/nodes/uvb-7.json
index 9701eab95be55f49e5474e6b6672fee83edee7df..ec8cc770498d26bbf751f93cdadf9a38f81b0d3a 100644
--- a/data/grid5000/sites/sophia/clusters/uvb/nodes/uvb-7.json
+++ b/data/grid5000/sites/sophia/clusters/uvb/nodes/uvb-7.json
@@ -109,11 +109,11 @@
       "driver": "mlx4_core",
       "enabled": true,
       "firmware_version": "2.9.1000",
-      "guid": "0x0024e89097ffc611",
+      "guid": "0x0024e89097ffc621",
       "interface": "InfiniBand",
       "ip": "172.18.132.7",
       "kavlan": false,
-      "mac": "20:00:55:00:41:80:00:00:00:00:00:00:00:24:e8:90:97:ff:c6:11",
+      "mac": "80:00:02:08:fe:80:00:00:00:00:00:00:00:24:e8:90:97:ff:c6:21",
       "management": false,
       "model": "MT26428 [ConnectX VPI PCIe 2.0 5GT/s - IB QDR / 10GigE]",
       "mountable": true,
@@ -129,10 +129,10 @@
       "driver": "mlx4_core",
       "enabled": false,
       "firmware_version": "2.9.1000",
-      "guid": "0x0024e89097ffc612",
+      "guid": "0x0024e89097ffc622",
       "interface": "InfiniBand",
       "kavlan": false,
-      "mac": "20:00:55:00:41:80:00:00:00:00:00:00:00:24:e8:90:97:ff:c6:12",
+      "mac": "80:00:02:09:fe:80:00:00:00:00:00:00:00:24:e8:90:97:ff:c6:22",
       "management": false,
       "model": "MT26428 [ConnectX VPI PCIe 2.0 5GT/s - IB QDR / 10GigE]",
       "mountable": false,
diff --git a/input/grid5000/sites/sophia/clusters/uvb/nodes/uvb-7.yaml b/input/grid5000/sites/sophia/clusters/uvb/nodes/uvb-7.yaml
index f62737740f4a8fceb5e0032fa01d836e81bdbb95..aee9a80a903abf4b54eceefbcf4a9a2a3c04c882 100644
--- a/input/grid5000/sites/sophia/clusters/uvb/nodes/uvb-7.yaml
+++ b/input/grid5000/sites/sophia/clusters/uvb/nodes/uvb-7.yaml
@@ -46,10 +46,10 @@ uvb-7:
     ib0:
       driver: mlx4_core
       firmware_version: 2.9.1000
-      guid: '0x0024e89097ffc611'
+      guid: '0x0024e89097ffc621'
       interface: InfiniBand
       ip: 172.18.132.7
-      mac: 20:00:55:00:41:80:00:00:00:00:00:00:00:24:e8:90:97:ff:c6:11
+      mac: 80:00:02:08:fe:80:00:00:00:00:00:00:00:24:e8:90:97:ff:c6:21
       management: false
       model: MT26428 [ConnectX VPI PCIe 2.0 5GT/s - IB QDR / 10GigE]
       name: ib0
@@ -58,9 +58,9 @@ uvb-7:
     ib1:
       driver: mlx4_core
       firmware_version: 2.9.1000
-      guid: '0x0024e89097ffc612'
+      guid: '0x0024e89097ffc622'
       interface: InfiniBand
-      mac: 20:00:55:00:41:80:00:00:00:00:00:00:00:24:e8:90:97:ff:c6:12
+      mac: 80:00:02:09:fe:80:00:00:00:00:00:00:00:24:e8:90:97:ff:c6:22
       management: false
       model: MT26428 [ConnectX VPI PCIe 2.0 5GT/s - IB QDR / 10GigE]
       name: ib1