Set Up An Ipv6-In-Ipv4 Tunnel Video Example - ZyXEL Communications ZyWALL USG100-Plus User Manual

Chapter 2 How to Set Up Your Network

2.7.6 Set Up an IPv6-in-IPv4 Tunnel Video Example

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2.7.7 What Can Go Wrong?
You don't need to activate the WAN1 IPv6 interface but make sure you enable the WAN1 IPv4
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interface. In IPv6-in-IPv4, the ZyWALL uses the WAN1 IPv4 interface to forward your 6to4 packets
to the IPv4 network.
In Windows, some IPv6 related tunnels may be enabled by default such as Teredo and 6to4
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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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ZyWALL USG100-PLUS User's Guide