be more compliant to ipv6-privacy-addrs-v2-01 regarding address lifetimes.
be more compliant to ipv6-privacy-addrs-v2-01 regarding address lifetimes.

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame