move palatine-hill networking to its own module, switch to systemd-networkd

Signed-off-by: ahuston-0 <aliceghuston@gmail.com>

systems/palatine-hill/configuration.nix

@@ -23,14 +23,11 @@ let
   ];
 in
 {
+  imports = [ ./networking.nix ];
 
   systemd.services.hydra-notify.serviceConfig.EnvironmentFile =
     config.sops.secrets."hydra/environment".path;
   programs.git.lfs.enable = false;
-  networking = {
-    hostId = "dc2f9781";
-    firewall.enable = false;
-  };
 
   nixpkgs.config.packageOverrides = pkgs: {
     vaapiIntel = pkgs.vaapiIntel.override { enableHybridCodec = true; };

systems/palatine-hill/networking.nix

@@ -0,0 +1,35 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+
+  networking = {
+    hostId = "dc2f9781";
+    firewall.enable = false;
+  };
+
+  systemd.network = {
+    enable = true;
+    networks = {
+      # enable DHCP for primary ethernet adapter
+      "10-lan" = {
+        matchConfig.Name = "eno1";
+        networkConfig.DHCP = "ipv4";
+        address = [ "192.168.76.2/32" ];
+        routes = [ { routeConfig.Gateway = "192.168.76.1"; } ];
+        linkConfig.RequiredForOnline = "routable";
+      };
+      # default lan settings
+      "60-def-lan" = {
+        matchConfig.Name = "eno*";
+        networkConfig.DHCP = "ipv4";
+        routes = [ { routeConfig.Gateway = "192.168.76.1"; } ];
+        linkConfig.RequiredForOnline = "no";
+      };
+    };
+  };
+}