fix yveltal bridge config

hosts/yveltal.nix

@@ -4,7 +4,9 @@
 
 { config, pkgs, lib, inputs, ... }:
 
-let bridge = bridge: {mac, iface, ip}@_in: {
+let bridge = bridge: {mac, iface, ip, gateway}@_in: {
+      systemd.network.enable = true;
+
       systemd.network.links."${iface}" = {
         linkConfig.Name = iface;
         matchConfig.PermanentMACAddress = mac;
@@ -13,6 +15,10 @@ let bridge = bridge: {mac, iface, ip}@_in: {
         enable = true;
         bridge = [ bridge ];
       };
+      systemd.network.networks."${bridge}" = {
+        address = [ ip ];
+        gateway = [ gateway ];
+      };
       systemd.network.netdevs."${bridge}" = {
         enable = true;
         netdevConfig = {
@@ -24,13 +30,14 @@ let bridge = bridge: {mac, iface, ip}@_in: {
 {
   imports =
     [ # Include the results of the hardware scan.
-      ../types/k3s-server.nix
+      ../types/server.nix
     ];
   config = lib.mkMerge [
     (bridge "lan0" {
       mac = "d8:9e:f3:1b:7f:8a";
       iface = "phy0";
       ip = "172.16.1.251/12";
+      gateway = "172.16.1.1";
     })
   ];
 

types/server.nix

@@ -7,7 +7,6 @@
     ../modules/systemd-efi.nix
     ../modules/luks.nix
     ../modules/users.nix
-    ../modules/k3s.nix
   ];
   
   system.stateVersion = "24.05";