>I've got a NetBSD box (oleary) acting as a 6bone gateway here, and one
>of my co-workers installed Winsock 5 (I think) on his Win98 box, to
>see what it would do.  When it tries to auto-configure its IPv6
>address, I get:
>Jul 14 09:04:58 oleary /netbsd: nd6_rs_input: invalid ND option, ignored
>Jul 14 09:04:58 oleary rtadvd[11039]: <nd6_options> bad ND option length(0) (type = 248)
>Anybody know what ND stands for, or what an ND option of type 248 is?
>Anyway, the result of this is apparently that the Win machine fails to
>get an IPv6 address.  However, it could just be that Winsock is really
>buggy.

	ND is for Neighbor Discovery (RFC2461).  Could I see the tcpdump
	results, by:
	# tcpdump -n -i foo -s 2000 -x -vvv icmp6

	I think Winsock5 is attaching something KAME does not like.

itojun