ipv6 with monowall

ref: http://superuser.com/questions/317896/how-to-configure-monowall-to-use-tunnelbroker

Once you've signed up with TunnelBroker.net, their "tunnel details" page will supply you with information about your tunnel:

IPv6 Tunnel Endpoints
- Server IPv4 Address: 209.51.181.2
- Server IPv6 Address: 2001:470:1f3a:1178::1 /64
- Client IPv6 Address: 2001:470:1f3a:1178::2 /64

Routed IPv6 Prefixes
- Routed /64: 2001:470:1f3a:1178:: /64

To configure TunnelBroker in m0n0wall:

1. By default all IPv6 support is disabled. In order for IPv6 configuration settings to appear you must enable IPv6 support. Under System -> Advanced, check Enable IPv6 support, and click Save:
   
2. In order to establish, or maintain a tunnel with Hurricane Electric, they must be able to ping you (over IPv4). This means that you must respond to ICMP packets on the WAN interface. UnderFirewall->IPv4 Rules, select the WAN tab. Click the add new rule button, and create the rule:
   • Action: Pass
   • Interface: WAN
   • Protocol: ICMP
   • ICMP type: any
   • Description: Allow IPv4 ICMP packets
   and click Save.
3. Next configure the WAN interface's IPv6 settings. Click Interfaces->WAN. Under IPv6 configuration:
   • IPv6 mode: Tunnel
   • IPv6 address: 2001:470:1f3a:1178::2/64 (Client IPv6 Address from tunnel details page)
   • IPv6 tunnel endpoint: 209.51.181.2 (Server IPv4 Address from tunnel details page)
   
   and click Save.
4. Next configure the LAN interface's IPv6 settings. Click Interfaces->LAN:
   • IPv6 mode: static
   • IPv6 address: 2001:470:1f3a:1178::/64 (Routed /64 from tunnel details page)
   • IPv6 RA: check Send IPv6 router advertisments
   • MTU: 1280 bytes
   
   and click Save.
5. By default in monowall all outbound IPv4 traffic is permitted. With IPv6 we must manually create the similar rule to allow all outbound traffic. Click Firewall->IPv6 Rules and select the LAN tab, and click add new rule, and create the rule:
   • Action: Pass
   • Interface: LAN
   • Protocol: any
   • Source
     Type: LAN subnet
   • Destination
     Type: any
   • Description: IPv6 LAN -> any
   and click Save.
6. Visit test-ipv6.com, to check that your IPv6 connectivity is working.

Tested with monowall v1.33