mbuf alignment requirement is only for freebsd[234] and bsdi[34] XXX check bsdi3
mbuf alignment requirement is only for freebsd[234] and bsdi[34]
XXX check bsdi3

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