diff --git a/nixos/modules/services/networking/firewall.nix b/nixos/modules/services/networking/firewall.nix index 1c0ea5034df..ea406864fd3 100644 --- a/nixos/modules/services/networking/firewall.nix +++ b/nixos/modules/services/networking/firewall.nix @@ -172,13 +172,16 @@ let }-j nixos-fw-accept ''} - # Accept all ICMPv6 messages except redirects and node - # information queries (type 139). See RFC 4890, section - # 4.4. ${optionalString config.networking.enableIPv6 '' + # Accept all ICMPv6 messages except redirects and node + # information queries (type 139). See RFC 4890, section + # 4.4. ip6tables -A nixos-fw -p icmpv6 --icmpv6-type redirect -j DROP ip6tables -A nixos-fw -p icmpv6 --icmpv6-type 139 -j DROP ip6tables -A nixos-fw -p icmpv6 -j nixos-fw-accept + + # Allow this host to act as a DHCPv6 client + ip6tables -A nixos-fw -d fe80::/64 -p udp --dport 546 -j nixos-fw-accept ''} ${cfg.extraCommands}