What Could Go Wrong - ZyXEL Communications ZyWALL 110 Handbook

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What Could Go Wrong?

If your IPv6 connection is not working, please make sure you enable
Auto-Configuration on the WAN1 IPv6 interface. If not, you will not have any
default route to forward the LAN's IPv6 packets.
In Windows, some IPv6 related tunnels may be enabled by default such as Teredo
and 6to4 tunnels. It may cause your computer to handle IPv6 packets in an
unexpected way. It is recommended to disable those tunnels on your computer.
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