nixos/home/routing-common: Working IPv6 router

nixos/boxes/home/routing-common/radvd.nix

@@ -0,0 +1,28 @@
+index: { lib, pkgs, ... }:
+let
+  inherit (lib) mkForce concatMapStringsSep;
+  inherit (lib.my) net;
+  inherit (lib.my.c.home) domain prefixes;
+
+  mkInterface = name: ''
+    interface lan-${name} {
+      AdvSendAdvert on;
+      AdvRASrcAddress { fe80::1; };
+      AdvLinkMTU ${toString prefixes."${name}".mtu};
+      prefix ${prefixes."${name}".v6} {};
+      RDNSS ${net.cidr.host 1 prefixes."${name}".v6} ${net.cidr.host 2 prefixes."${name}".v6} {};
+      DNSSL ${domain} {};
+     };
+  '';
+in
+{
+  # To be started by keepalived
+  systemd.services.radvd.wantedBy = mkForce [ ];
+
+  services = {
+    radvd = {
+      enable = true;
+      config = concatMapStringsSep "\n" mkInterface [ "hi" "lo" "untrusted" ];
+    };
+  };
+}