HP-UX IPv6 Transport Administrator's Guide for TOUR 2.0 (April 2004, rev 2)

IPv6 Software and Interface Technology
Migrating from IPv4 to IPv6
Chapter 782
In all three cases, you do not need to explicitly specify the address of the
tunnel entry point, as this special "6to4" address will be automatically
created based on the globally unique IPv4 address that will be the source
address in the encapsulating (outer) header.
To configure R1 using the /etc/rc.config.d/netconf-ipv6 file, add
the following lines:
TUN_INTERFACE_NAME[0]=”iptu0”
TUN_TYPE[0]=”6to4”
TUN_LOCAL_ADDRESS[0]=””
TUN_REMOTE_ADDRESS[0]=””
TUN_ENCAP_SRC_ADDRESS[0]=”15.1.1.1”
TUN_ENCAP_DST_ADDRESS[0]=””
TUN_INTERFACE_STATE[0]=”up”
“6to4” End-Node View Example
Figure 7-4 shows two IPv6 subnetworks. The end nodes have their
routers’ globally unique IPv4 addresses embedded in their network
prefixes. The routers have “6to4” addresses and corresponding globally
unique IPv4 addresses. From the IPv6 end-node view, each host’s
subnetwork is connected to the other’s through a "6to4" router. All IPv4
tunneling is transparent to the IPv6 end nodes.
Figure 7-4 "6to4" IPv6 End Node View Example
IPv6
Brussels
Host
IPv6
Tokyo
Host
6to4
Router
Brussels
6to4
Router
Tokyo
Global Internet (IPv4)
2002:0f03:0405::/48
2002:0f030405::1
2002:1106:0708::/4
8
2002:1106:0708::1
17.6.7.8
15.3.4.5