Isatap Tunnels; Configurable Port - Wan Option; Figure 42: Isatap Tunnels Configuration - D-Link DSR-250N User Manual

Unified Services Router

3.5.7 ISATAP Tunnels

Advanced > IPv6 > 6to4 Tunneling
Figure 42:
IS A TAP T un ne l s Co nf ig u ra t io n
3.6

Configurable Port - WAN Option

This router supports one of the physical ports to be configured as a secondary WAN Ethernet port or a
dedicated DMZ port. If the port is selected to be a secondary WAN interface, all configuration pages
relating to WAN2 are enabled.
ISATAP (Intra-Site Automatic Tunnel Addressing Protocol) is an IPv6 transition
mechanism meant to transmit IPv6 packets between dual-stack nodes on top of an IPv4
network. ISATAP specifies an IPv6-IPv4 compatibility address format as well as a means
for site border router discovery. ISATAP also specifies the operation of IPv6 over a
specific link layer - that being IPv4 used as a link layer for IPv6.
ISATAP Subnet Prefix: This is the 64-bit subnet prefix that is assigned to the logical
ISATAP subnet for this intranet. This can be obtained from your ISP or internet registry,
or derived from RFC 4193.
End Point Address: This is the endpoint address for the tunnel that starts with this router.
The endpoint can be the LAN interface (assuming the LAN is an IPv4 network), or a
specific LAN IPv4 address.
IPv4 Address: The end point address if not the entire LAN.
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