dn42: fix wireguard

hosts/containers/dn42/configuration.nix

@@ -70,8 +70,9 @@ in {
       servers = builtins.mapAttrs (name: conf: mkServer name conf) openvpnNeighbors;
     };
 
-  networking.wireguard.enable = true;
-  networking.wireguard.interfaces =
+  networking.wireguard = {
+    enable = true;
+    interfaces =
       let
         wireguardNeighbors = lib.filterAttrs (_: conf: conf ? wireguard) neighbors;
       in
@@ -84,6 +85,7 @@ in {
             persistentKeepalive = 30;
           } ];
         }) wireguardNeighbors;
+  };
 
   services.bird2 = {
     enable = true;