IPv6 prefixes longer then /64: are they possible in DOCSIS networks?

Wed Nov 30 23:33:51 UTC 2011

On 30 Nov 2011, at 23:02, Bill Stewart wrote:

> On Wed, Nov 30, 2011 at 1:18 PM, Mark Blackman <mark at exonetric.com> wrote:
>> ... and I'm not sure why SLAAC wanted more than 48 bits.
> 
> One reason IPv6 addresses are 128 bits long instead of 40, 48, 64 or
> 80 is because converting from IPv4 to IPv6 is really painful and we
> don't want to ever have to do it again in the future.

Sure, 128 bits I can see the point of. Rigid insistence on /64 subnets
when no broadcast domain will ever have 2^64 devices on it seems like
a less obvious choice.

- Mark