corrected "address parameters" so that we don't have to specify the meaningless (but mandatory) prefix length in the context of IA_NA. (this also makes the implementation synchronized with the man pages)
corrected "address parameters" so that we don't have to specify the
meaningless (but mandatory) prefix length in the context of IA_NA.
(this also makes the implementation synchronized with the man pages)

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