IPv6 Address Autoconfiguration (Cont.)
Supporting IPv6 will have less impact on routers than on hosts since host applications may include specific IP addresses.
IPv6 is still being developed so users of TCP/IP technologies should carefully analyze their networking requirements and IPv6 product availability (and robustness) and use this information to decide when and how to transition to IPv6.
For more details, see http://www.cisco.com/wrap/public/732/ipv6_wp.html