>[...]
>>	I don't see your point.  which configuration are you talking about?
>>	(1) # ifconfig p2p0 inet6 A B prefixlen 64 alias
>>	(2) # ifconfig p2p0 inet6 A B prefixlen 128 alias
>>	(3) # ifconfig p2p0 inet6 A prefixlen 64
>
>>	with the lastet KAME, (1) is illegal and rejected.  (2) and (3) works
>>	happily.  maybe we should ignore netmask on (1) configuration and treat
>>	it as (2).  don't remember why we did not do so.
>
>I had "ifconfig gif0 inet6 A prefixlen 127" and got errors even though 
>the other side -is- within A/127 and A isn't being used on the node again.
>
>The ifconfig gif0 inet6 A B prefixlen 128 shut it up ok.
>
>JFWIW,

	hmm, thanks for reporting.  i personally never use anything other than
	/64, and maybe that's the reason why I never see it fails...

	btw, /127 assignment cannot be used in IPv6 as all-zero host address
	(the last bit = 0 in /127 case) is reserved for subnet router anycast
	address (RFC2367).  you at least need /126 to accomodate two nodes
	legally.

itojun