Comcast Activates First Users With IPv6 Native Dual Stack Over DOCSIS

Benny Amorsen benny+usenet at
Wed Feb 2 14:50:37 CET 2011

Mark Smith writes:

> Why a single /64? You certainly won't be only getting just a /32, and
> I'm sure you've got way less than 4 billion customers. A /60 would have
> been a conservative option if you wanted to dip your toe in the water,
> yet still would allowing people to use subnets in their home if they
> wanted to perform some of their own experiments - your trial
> participants are more likely to have a few routers in their home that
> they may want to use to experiment with IPv6 and IPv6 routing.

Indeed, we can only hope that Comcast is smarter than going into
production with /64 per customer. And that no one looks at it and gets
"good" ideas.

/64 per customer will lead to the development of fancy boxes based on
RFC 4389 if we are lucky, and creative NAT if we are unlucky.


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