diff --git a/ops/nixos/totoro/default.nix b/ops/nixos/totoro/default.nix
index eb0d4e3685..826339353f 100644
--- a/ops/nixos/totoro/default.nix
+++ b/ops/nixos/totoro/default.nix
@@ -43,7 +43,14 @@ in {
     domain = "lukegb.xyz";
     hostId = "676c08c4";
     useDHCP = false;
-    interfaces.enp0s31f6.useDHCP = true;
+    interfaces.br-ext.useDHCP = true;
+    bridges.br-ext.interfaces = [ "enp0s31f6" ];
+  };
+
+  # Virtualisation
+  virtualisation.libvirtd = {
+    enable = true;
+    allowedBridges = [ "virbr0" "br-ext" ];
   };
 
   system.stateVersion = "20.03";