From b6e72504d62e2f68c8c3d445f0215b98ad289268 Mon Sep 17 00:00:00 2001
From: Daniel Barlow <dan@telent.net>
Date: Fri, 30 Jun 2023 10:17:33 +0100
Subject: [PATCH] ipv6 default route

needs to specify the ppp0 *peer* address not the local address
---
 examples/rotuer.nix                       | 11 ++++++++++-
 modules/busybox.nix                       |  1 +
 pkgs/liminix-tools/networking/default.nix |  9 +++++----
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/examples/rotuer.nix b/examples/rotuer.nix
index 4c9ce5d1..d37ece1c 100644
--- a/examples/rotuer.nix
+++ b/examples/rotuer.nix
@@ -220,12 +220,20 @@ in rec {
   };
 
   services.defaultroute4 = route {
-    name = "defaultroute";
+    name = "defaultroute4";
     via = "$(output ${services.wan} address)";
     target = "default";
     dependencies = [ services.wan ];
   };
 
+  services.defaultroute6 = route {
+    name = "defaultroute6";
+    via = "$(output ${services.wan} ipv6-peer-address)";
+    target = "default";
+    dev = "$(output ${services.wan} ifname)";
+    dependencies = [ services.wan ];
+  };
+
   services.firewall =
     let
       script= pkgs.firewallgen "firewall.nft" (import ./rotuer-firewall.nix);
@@ -307,6 +315,7 @@ in rec {
       hostap5
       ntp
       defaultroute4
+      defaultroute6
       packet_forwarding
       dns
       resolvconf
diff --git a/modules/busybox.nix b/modules/busybox.nix
index aeaa0a8a..953c3103 100644
--- a/modules/busybox.nix
+++ b/modules/busybox.nix
@@ -72,6 +72,7 @@ in {
         FEATURE_EDITING_MAX_LEN = "1024";
         FEATURE_TAB_COMPLETION = "y";
         FEATURE_EDITING_WINCH = "y";
+        FEATURE_IPV6 = "y";
       };
     };
     filesystem = dir {
diff --git a/pkgs/liminix-tools/networking/default.nix b/pkgs/liminix-tools/networking/default.nix
index 22fe6dd0..6080ad7c 100644
--- a/pkgs/liminix-tools/networking/default.nix
+++ b/pkgs/liminix-tools/networking/default.nix
@@ -45,14 +45,15 @@ in {
   pppoe = callPackage ./pppoe.nix {};
   dnsmasq = callPackage ./dnsmasq.nix {};
   hostapd = callPackage ./hostapd.nix {};
-  route = { name, target, via, dependencies }:
-    oneshot {
+  route = { name, target, via, dependencies, dev ? null }:
+    let with_dev = if dev != null then "dev ${dev}" else "";
+    in oneshot {
       inherit name;
       up = ''
-        ip route add ${target} via ${via}
+        ip route add ${target} via ${via} ${with_dev}
       '';
       down = ''
-        ip route del ${target} via ${via}
+        ip route del ${target} via ${via} ${with_dev}
       '';
       inherit dependencies;
     };