add lxc specific configuration for incus

keeps things simple

configurations/nixos/tofu/configuration.nix

@@ -1,18 +0,0 @@
-{ config, pkgs, ... }:
-{
-  services = {
-    tty-ips.enable = true;
-  };
-  networking = {
-    yggdrasil = {
-      enable = true;
-      AllowedPublicKeys = [
-        "d0e265fcf663451ae9bc048dc1297749819ce9d48042a986f2866c15a779a074"
-      ];
-    };
-    hostName = "smultiboi";
-  };
-  environment.systemPackages = [
-  ];
-  system.stateVersion = "25.05";
-}

configurations/nixos/tofu/default.nix

@@ -10,6 +10,20 @@ in
   imports = [
     self.nixosModules.default
     "${modulesPath}/virtualisation/lxc-container.nix"
-    ./configuration.nix
   ];
+  services = {
+    tty-ips.enable = true;
+  };
+  networking = {
+    yggdrasil = {
+      enable = true;
+      AllowedPublicKeys = [
+        "d0e265fcf663451ae9bc048dc1297749819ce9d48042a986f2866c15a779a074"
+      ];
+    };
+    hostName = "tofu";
+  };
+  environment.systemPackages = [
+  ];
+  system.stateVersion = "25.05";
 }

modules/nixos/common/incus.nix

@@ -0,0 +1,21 @@
+{
+
+  systemd.network = {
+    enable = true;
+    networks."50-eth0" = {
+
+      matchConfig.Name = "eth0";
+      networkConfig = {
+        DHCP = "ipv4";
+        IPv6AcceptRA = true;
+      };
+      linkConfig.RequiredForOnline = "routable";
+    };
+  };
+
+  networking = {
+    dhcpcd.enable = false;
+    useDHCP = false;
+    useHostResolvConf = false;
+  };
+}