Iljitsch van Beijnum [mailto:[EMAIL PROTECTED] wrote

[ ... ]

> Then there are technical considerations for a minimum size  
> assignment. Today, most end-users connect one or more hosts in their  
> site to the internet through an intermediate device that, amongst  
> other functionality, functions as an IPv4 router. It's reasonable to  
> assume that this situation translates into a scenario in IPv6 where  
> users have a router on their site. This requires at least two  
> subnets: one internal to the site, that hosts connect to, and one  
> used between the user's and ISP's routers. However, there is no  
> requirement that these two subnet prefixes (which should be /64 as  
> per relevant specifications such as RFC 3513) come from a single  
> shorter prefix assigned to the user. This means that the minimum for  
> most users would be a /63 or two /64s.

On this point, unless you're speaking of NATs (which I though would be
discouraged with v6), doesn't it make a lot of sense to use the same
address prefix to reach the subnet outside and inside the home router?

Bert

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