do not set RTF_CLONING bit for in6_ifaddr, because we do not use the flag (in ifaddr) anymore. modified some comments accordingly.
do not set RTF_CLONING bit for in6_ifaddr, because we do not use the flag
(in ifaddr) anymore.
modified some comments accordingly.

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