>I initially postulated that I could work around the problem by
>putting a fake AAAA address in my private dns zone, but it
>doesn't work because telnet then grabs that, fails to get an
>IPv6 socket, and bails out.

	Let me check if I have any bugs in telnet.  I'll get back to you guys
	later.

>% telnet broccoli
>Trying ::172.30.0.1...
>telnet: socket: Protocol not supported		

	The dummy address you put into is not very good idea.  it is in
	IPv4 compatible IPv6 address space, and it is intended for special
	usage in RFC1933.  IPv6 code in NetBSD (KAME) does not support this
	form (this is intentionally omitted, as auto tunnel raises too many
	security problems).

itojun