HP-UX IPv6 Transport Administrator's Guide for TOUR 1.0

IPv6 Software and Interface Technology
Migrating from IPv4 to IPv6
Chapter 772
Figure 6-3 shows the same routers from the IPv4 network perspective.
Router Brussels and Router Tokyo are IPv4 Routers. All IPv6 traffic is
tunneled transparently through the IPv4 network.
Figure 7-3 6to4 IPv4 Internet View
IPv6
Brussels
Site
IPv6
Tokyo
Site
6to4
Router
Brussels
6to4
Router
Tokyo
128.2.3.4
5.6.7.8
Global Internet (IPv4)