
132 n Handbook of IPv4 to IPv6 Transition
When the host on the left resolves the name of the host on the right, it forwards
an IPv6 packet as shown toward the 6to4 router. e 6to4 router has a 2002::/16
route that is used to forward traffic to other 6to4 sites. is route forwards traffic
to a router interface, termed a pseudointerface in the RFC, that encapsulates the
IPv6 packet in an IPv4 packet (with protocol field 41 indicating encapsulation).
e source address is that of the 6to4 border router, and the destination address is
derived from the IPv6 address of the destination host (which has the address embed
-
ded as part of its IPv6 6to4 addre ...