User's Manual

66xx/67xx Router Users Guide 122
IP Tunnel
The IP Tunnel page allows you to configure an IPv6 tunnel in an IPv4 network or an IPv4 tunnel
in an IPv6 tunnel.
IPv6inIPv4
To configure an IPv6 tunnel in a IPv4 network, select IPv6inIPv4.
Tunnel Name: Specify a name for the tunnel.
Mechanism: Only 6RD is supported.
Associated WAN Interface: Select a WAN interface for the tunnel.
Associated LAN Interface: Select a LAN interface for the tunnel.
The following parameters are only required if you select to manually configure a LAN
interface.
IPv4 Mask Length: Specify a IPv4 mask length. Value is 0 ~ 32.
6rd Prefix with Prefix Length: Specify a prefix/length, such as: 2002::/64.
Border Relay IPv4 Address: Specify an IPv4 address.