Router

1 files changed, 8 insertions, 0 deletions

diff --git a/modules/router.nix b/modules/router.nix
index 33e8407..1e05b08 100644
--- a/modules/router.nix
+++ b/modules/router.nix
@@ -50,6 +50,14 @@ let
       "net.ipv4.conf.default.forwarding" = true;
       "net.ipv6.conf.all.forwarding" = true;
       "net.ipv6.conf.default.forwarding" = true;
+      # Do not prevent IPv6 autoconfiguration.
+      # See <http://strugglers.net/~andy/blog/2011/09/04/linux-ipv6-router-advertisements-and-forwarding/>.
+      "net.ipv6.conf.all.accept_ra" = 2;
+      "net.ipv6.conf.default.accept_ra" = 2;
+
+      # Forward IPv6 packets.
+      "net.ipv6.conf.all.forwarding" = true;
+      "net.ipv6.conf.default.forwarding" = true;
     };
 
     environment.systemPackages = with pkgs; [ tcpdump ];