partly support getting IPv6 addresses

- gets interface id from ppp
- runs odhcpc to get RA and prefix delegation
- doesn't do anything useful with the data yet

pkgs/default.nix

@@ -43,6 +43,7 @@
 
   preinit = callPackage ./preinit {};
   swconfig = callPackage ./swconfig {};
+  odhcp6c = callPackage ./odhcp6c {};
 
   openwrt = callPackage ./openwrt {};
 

pkgs/liminix-tools/networking/pppoe.nix

@@ -29,8 +29,17 @@ let
     )
     echo >/proc/self/fd/10
   '';
+  ip6-up = writeAshScript "ip6-up" {} ''
+    . ${serviceFns} 
+    (in_outputs ${name}
+     echo $4 > ipv6-address
+     echo $5 > ipv6-peer-address
+    )
+    echo >/proc/self/fd/10
+  '';
   ppp-options' = ppp-options ++ [
     "ip-up-script" ip-up
+    "ipv6-up-script" ip6-up
     "ipparam" name
     "nodetach"
     "usepeerdns"

pkgs/odhcp6c/default.nix

@@ -0,0 +1,20 @@
+{ stdenv
+, buildPackages
+, cmake
+, fetchFromGitHub
+, ...} :
+# let switchDotH = buildPackages.fetchurl {
+#   url = "https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob_plain;f=target/linux/generic/files/include/uapi/linux/switch.h;hb=99a188828713d6ff9c541590b08d4e63ef52f6d7";
+#   sha256 = "15kmhhcpd84y4f45rf8zai98c61jyvkc37p90pcxirna01x33wi8";
+#   name="switch.h";
+# };
+stdenv.mkDerivation {
+  src = fetchFromGitHub {
+    owner = "openwrt";
+    repo = "odhcp6c";
+    rev = "bcd283632ac13391aac3ebdd074d1fd832d76fa3";
+    hash = "sha256-jqxr+N1PffWYmF0F6hJKxRLMN5Ht5WpehK1K2HjL+do=";
+  };
+  name = "odhcp6c";
+  nativeBuildInputs = [ cmake ];
+}