diff --git a/m/bay/configuration.nix b/m/bay/configuration.nix
index 47e82644..7bdfe740 100644
--- a/m/bay/configuration.nix
+++ b/m/bay/configuration.nix
@@ -24,7 +24,7 @@
       address = "10.0.40.40";
       prefixLength = 24;
     } ];
-    interfaces.ibp5s0.ipv4.addresses = [ {
+    interfaces.ibs785.ipv4.addresses = [ {
       address = "10.0.42.40";
       prefixLength = 24;
     } ];
diff --git a/m/hut/configuration.nix b/m/hut/configuration.nix
index 7fabe4fb..5b32bcee 100644
--- a/m/hut/configuration.nix
+++ b/m/hut/configuration.nix
@@ -45,7 +45,7 @@
       address = "10.0.40.7";
       prefixLength = 24;
     } ];
-    interfaces.ibp5s0.ipv4.addresses = [ {
+    interfaces.ibs785.ipv4.addresses = [ {
       address = "10.0.42.7";
       prefixLength = 24;
     } ];
diff --git a/m/lake2/configuration.nix b/m/lake2/configuration.nix
index a67e5aea..477cf59c 100644
--- a/m/lake2/configuration.nix
+++ b/m/lake2/configuration.nix
@@ -46,7 +46,7 @@
       address = "10.0.40.42";
       prefixLength = 24;
     } ];
-    interfaces.ibp5s0.ipv4.addresses = [ {
+    interfaces.ibs785.ipv4.addresses = [ {
       address = "10.0.42.42";
       prefixLength = 24;
     } ];
diff --git a/m/owl1/configuration.nix b/m/owl1/configuration.nix
index e471969d..99f88a0d 100644
--- a/m/owl1/configuration.nix
+++ b/m/owl1/configuration.nix
@@ -20,7 +20,7 @@
       address = "10.0.40.1";
       prefixLength = 24;
     } ];
-    interfaces.ibp5s0.ipv4.addresses = [ {
+    interfaces.ibs785.ipv4.addresses = [ {
       address = "10.0.42.1";
       prefixLength = 24;
     } ];
diff --git a/m/owl2/configuration.nix b/m/owl2/configuration.nix
index e28c5e52..d771c260 100644
--- a/m/owl2/configuration.nix
+++ b/m/owl2/configuration.nix
@@ -21,7 +21,7 @@
       prefixLength = 24;
     } ];
     # Watch out! The OmniPath device is not in the same place here:
-    interfaces.ibp129s0.ipv4.addresses = [ {
+    interfaces.ibs801.ipv4.addresses = [ {
       address = "10.0.42.2";
       prefixLength = 24;
     } ];