>>> Now, the question is, how can I do this for IPv6?  If we assume I'm
>>> using (say) 0300::/96 on the house LAN, how can I get G to respond
>>> to neighbour sols for S's address as well as G's own?
>> You'll never get a /96!
>I've actually got a /56 (assigned out of a friendly site's /48), of
>which I'm using a /96, with the other 40 bits presently all 0.

	it is up to you, but i highly recommend you to use /64 for subnets,
	as all specs recommend.  stateless autoconfiguration is possible
	only with /64, and fixed /64 boundary for subnet eases many of
	management hurdles.

itojun