Re: what problem is solved by proscribing non-64 bit prefixes?

[Alexandru Petrescu <alexandru.petrescu at gmail.com>]

michael.dillon at bt.com wrote:
> > In a typical IPv6 ADSL household landscape...
> >
> > An ADSL IPv6 operational deployment offers a /64 prefix at home.
> > With that, I can't subnet _and_ use IPv6 stateless 
> > auto-configuration.
>
> In a typical IPv6 ADSL household landscape the ISP will assign you a
> /48 with plenty of subnetting space.

Not sure, FWIW, in the IPv6 ADSL household I live in gives me a /64 and 
not /48 (see draft-despres-v6ops-6rd-ipv6-rapid-deployment-01.txt).

That's typical for me but I don't know about the other deployed IPv6 
ADSL, do they give /64 or shorter prefixes?

Alex

> In some regions there will be some ISPs who will only assign a /56 to
> residential sites, but that still gives you a reasonable amount of
> subnetting ability. Under RIR rules, an ISP can justify giving you a
> /48 if you ask them for it.
>
> --Michael Dillon


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