I plan to remove some of portability assuarance code in
	KAME IPv6 part, since some of #ifdefs are way too much to be readable.
	I'll remove parts like:
		#ifdef __bsdi__
		#ifdef __FreeBSD__
	or some other parts that does not apply for NetBSD.
	It actually makes KAME upgrade harder, but I think I need to do this
	for NetBSD repository.

	If many people are trying to reuse KAME sys/netinet6 on other *BSD
	or other systems, I can leave #ifdefs as is (however, note that
	#ifdef'ed version is always available from ftp.kame.net).
	Comments are appreciated.

itojun