diff --git a/hosts/dn42-ildix-clerie/configuration.nix b/hosts/dn42-ildix-clerie/configuration.nix
index ff718c0..c51fb69 100644
--- a/hosts/dn42-ildix-clerie/configuration.nix
+++ b/hosts/dn42-ildix-clerie/configuration.nix
@@ -7,23 +7,42 @@
     ];
 
   profiles.clerie.mercury-vm.enable = true;
+  profiles.clerie.common-networking.enable = true;
 
   boot.loader.grub.enable = true;
   boot.loader.grub.device = "/dev/vda";
 
-  networking.useDHCP = false;
-  # VM Nat Netz mercury
-  networking.interfaces.ens18.ipv4.addresses = [ { address = "192.168.10.27"; prefixLength = 24; } ];
-  # Ildix
-  networking.interfaces.ens19.ipv6.addresses = [ { address = "fd81:edb3:71d8:ffff::13"; prefixLength = 64; } ];
-  # Route to dn42-ildix-service
-  networking.interfaces.ens19.ipv6.routes = [ { address = "fd81:edb3:71d8::"; prefixLength = 48; via = "fd81:edb3:71d8:ffff:2953::1"; } ];
-
-  # public address
-  networking.interfaces.ens20.ipv6.addresses = [ { address = "2001:638:904:ffcb::4"; prefixLength = 64; } ];
-
-  networking.defaultGateway6 = { address = "2001:638:904:ffcb::1"; interface = "ens20"; };
-  networking.defaultGateway = { address = "192.168.10.1"; interface = "ens18"; };
+  systemd.network.networks."10-wan" = {
+    matchConfig.Name = "ens20";
+    address = [
+      "2001:638:904:ffcb::4/64"
+    ];
+    routes = [
+      { Gateway = "2001:638:904:ffcb::1"; }
+    ];
+    linkConfig.RequiredForOnline = "routable";
+  };
+  systemd.network.networks."10-nat-netz-mercury" = {
+    matchConfig.Name = "ens18";
+    address = [
+      "192.168.10.27/24"
+    ];
+    routes = [
+      { Gateway = "192.168.10.1"; }
+    ];
+    linkConfig.RequiredForOnline = "routable";
+  };
+  systemd.network.networks."10-dn42-ildix" = {
+    matchConfig.Name = "ens19";
+    address = [
+      "fd81:edb3:71d8:ffff::13/64"
+    ];
+    routes = [
+      # Route to dn42-ildix-service
+      { Destination = "fd81:edb3:71d8::/48"; Gateway = "fd81:edb3:71d8:ffff:2953::1"; }
+    ];
+    linkConfig.RequiredForOnline = "no";
+  };
 
   # Open Firewall for BGP
   networking.firewall.allowedTCPPorts = [ 179 ];
@@ -36,7 +55,7 @@
   services.bird.enable = true;
   services.bird.package = pkgs.bird2;
   services.bird.config = ''
-  router id ${ (lib.head config.networking.interfaces.ens18.ipv4.addresses).address };
+  router id 192.168.10.27;
 
   protocol direct {
     interface "ens19";