Set Up An Ipv6 6To4 Tunnel Video Example - ZyXEL Communications ZyWALL USG100-Plus User Manual

2.6.5 Set Up an IPv6 6to4 Tunnel Video Example

Use Adobe Reader 9 or later or a recent version of Foxit Reader to play this video. After clicking
play, you may need to confirm that you want to play the content and click play again.
2.6.6 What Can Go Wrong?
Do not enable Auto-Configuration for the LAN1 IPv6 interface. Enabling it will cause two default
1
routes, however, the ZyWALL only needs a default route generated by your relay router setting.
In 6to4, the ZyWALL doesn't need a policy route to determine where to forward a 6to4 packet
(starting with 2002 in the IPv6 IP address). The next gateway information of where to forward a
6to4 packet can be retrieved from the packet's destination IP address. The ZyWALL only forwards a
6to4 packet to the relay router using the default route if the packet's destination is not an IP
address starting with 2002.
You don't need to activate the WAN1 IPv6 interface but make sure you enable the WAN1 IPv4
2
interface. In 6to4, the ZyWALL uses the WAN1 IPv4 interface to forward your 6to4 packets over the
IPv4 network.
ZyWALL USG100-PLUS User's Guide
Chapter 2 How to Set Up Your Network
37