Subject: Re: IPv6: interoperability ?
To: Darren Reed <darrenr@reed.wattle.id.au>
From: None <itojun@iijlab.net>
List: current-users
Date: 10/17/1999 20:40:13 
>	The 4th byte is only for kernel internal use.  They will not appear
>	on the wire.  This is a kind of messy but is necessary for scoped
>	address support.  Other IPv6 stacks tries to GUESS outgoing interface,
>	and KAME team believes that the guessing is the wrong way.
>	See sys/netinet6/{TODO,IMPLEMENTATION}.

	inet6(4) also talks about this issue.

itojun