- Nuke #ifdef SCOPEDROUTING. It was never enabled and is useless now[1].

- Nuke #ifdef SCOPEDROUTING.  It was never enabled and is useless now[1].
- Add in6_domifattach(), in6_domifdetach(), and ifp->if_afdata[2].
- ANSIfy.

Obtained from:	KAME via FreeBSD
References (FreeBSD):

	net/
	if.c		1.168[2]
	if_var.h	1.59[2]

	netinet/
	icmp6.h		1.12[2]
	tcp_input.c	1.209[2]

	netinet6/
	icmp6.c		1.38[1], 1.39[2]
	in6.c		1.30[1], 1.31[2]
	ip6_forward.c	1.20[1]
	in6_gif.c	1.15[1]
	in6_proto.c	1.25[2]
	in6_ifattach.c	1.17[1], 1.18[2]
	ip6_input.c	1.53[1], 1.57[2]
	ip6_output.c	1.58[1], 1.59[2]
	in6_src.c	1.14[2]
	in6_var.h	1.14[2]
	nd6.c		1.30[1], 1.32[2]
	nd6.h		1.13[2]
	nd6_nbr.c	1.19[2]
	nd6_rtr.c	1.20[2]
	scope6.c	1.8[2]
	scope6_var.h	1.3[2]

	sys/
	domain.h	1.18[2]
	kernel.h	1.113[2]