WIP: router: add configuration for test router

flake.nix

@@ -88,6 +88,17 @@
           (hmModule ./home/common.nix)
         ];
       };
+      router-1 = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [
+          secrix.nixosModules.default
+          ./modules
+          ./hosts/common.nix
+          ./hosts/router-1
+          ./users/cazzzer
+          (hmModule ./home/common.nix)
+        ];
+      };
     };
     # https://github.com/nix-community/nixos-generators?tab=readme-ov-file#using-in-a-flake
     packages.x86_64-linux = {

hosts/router-1/default.nix

@@ -0,0 +1,23 @@
+{
+  imports = [
+    ../../modules/router
+    ../hw-vm.nix
+  ];
+
+  router = {
+    enableDesktop = false;
+    enableDhcpClient = false;
+    wanMAC = "bc:24:11:af:bd:84";
+    lanMAC = "bc:24:11:38:b1:91";
+    wanLL = "fe80::be24:11ff:feaf:bd84";
+    lanLL = "fe80::be24:11ff:fe38:b191";
+    defaultToken = 251;
+
+    pdFromWan = "fd46:fbbe:ca55:100";
+    wanAddr4 = "192.168.1.63";
+    wanGw4 = "192.168.1.254";
+  };
+
+  # override hw-vm.nix default
+  networking.useDHCP = false;
+}

hosts/router/default.nix

@@ -7,6 +7,7 @@
 
   router = {
     enableDesktop = false;
+    enableDhcpClient = true;
     wanMAC = "bc:24:11:4f:c9:c4";
     lanMAC = "bc:24:11:83:d8:de";
     wanLL = "fe80::be24:11ff:fe4f:c9c4";

modules/router/ifconfig.nix

@@ -1,5 +1,6 @@
 { config, lib, pkgs, ... }:
 let
+  cfg = config.router;
   vars = import ./vars.nix config;
   links = vars.links;
   ifs = vars.ifs;
@@ -57,7 +58,7 @@ in
   # https://github.com/systemd/systemd/issues/22571
   # https://github.com/systemd/systemd/issues/22571#issuecomment-2094905496
   # https://gist.github.com/csamsel/0f8cca3b2e64d7e4cc47819ec5ba9396
-  networking.dhcpcd.enable = true;
+  networking.dhcpcd.enable = cfg.enableDhcpClient;
   networking.dhcpcd.allowInterfaces = [ ifs.wan.name ];
   networking.dhcpcd.extraConfig = ''
     debug

modules/router/opts.nix

@@ -8,30 +8,36 @@ with lib;
       enableDesktop = mkOption {
         type = types.bool;
         default = false;
-        description = "Enable desktop environment";
+        description = "Enable desktop environment for debugging";
+      };
+
+      enableDhcpClient = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Enable DHCP client (should only be set on the main router)";
       };
 
       wanMAC = mkOption {
         type = types.str;
-        default = "bc:24:11:4f:c9:c4";
+        example = "bc:24:11:4f:c9:c4";
         description = "WAN interface MAC address";
       };
 
       lanMAC = mkOption {
         type = types.str;
-        default = "bc:24:11:83:d8:de";
+        example = "bc:24:11:83:d8:de";
         description = "LAN interface MAC address";
       };
 
       wanLL = mkOption {
           type = types.str;
-          default = "fe80::be24:11ff:fe4f:c9c4";
+          example = "fe80::be24:11ff:fe4f:c9c4";
           description = "WAN IPv6 link-local address";
       };
 
       lanLL = mkOption {
           type = types.str;
-          default = "fe80::be24:11ff:fe83:d8de";
+          example = "fe80::be24:11ff:fe83:d8de";
           description = "LAN IPv6 link-local address";
       };
 
@@ -43,17 +49,20 @@ with lib;
 
       wanAddr4 = mkOption {
         type = types.str;
+        example = "192.168.1.61";
         description = "WAN IPv4 address";
       };
 
       wanGw4 = mkOption {
         type = types.str;
+        example = "192.168.1.254";
         description = "WAN IPv4 gateway";
       };
 
       pdFromWan = mkOption {
         type = types.str;
-        description = "IPv6 prefix delegation from WAN";
+        example = "2001:db8:0:000";
+        description = "IPv6 prefix delegation from ISP (/60)";
       };
     };
   };

modules/router/vars.nix

@@ -77,7 +77,7 @@ rec {
       p4_ = "${p4}.20";                  # .0/24
       p6_ = "${pdFromWan}0";             # ::/64 managed by Att box
       ulaPrefix_ = "${ulaPrefix}:0020";  # ::/64
-      ip6Token_ = "::1:1";  # override ipv6 for lan20, since the Att box uses ::1 here
+      ip6Token_ = "::1:${toString cfg.defaultToken}";  # override ipv6 for lan20, since the Att box uses ::1 here
     };
     lan30 = mkIfConfig {
       name_ = "${lan.name}.30";