Dynamic (changing) IPv6 prefix delegation

[nathan at atlasnetworks.us (Nathan Eisenberg)]

> > What does Joe Sixpack do at home with a /48 that he cannot do with a
> /56 or a /60?
> 
> Flexibility.  With dhcpv6 prefix delegation, you are going to want
> devices
> to be able to request (at least) /60s for further delegation (and
> better yet
> /56s to allow them to delegate /60s with further delegation when
> needed).
> 
> While Joe may not have as complex of an environment as his neighbor
> Sue, should we target the common Joe, or the advanced Sue?  As I
> suspect Owen will say, there is no reason *not* to give out /48s
> (ipv6 space is huge), and this is good opportunity to enable the
> residential user to not have to work around artificial limits in the
> future.
> 
> Gary

Prefix delegation for what?  What does Sue do at home that requires 2 levels of prefix delegation inside the house?  Does Sue really need to be able to have 65536 subnets instead of 256 in her home? 

Nathan