"effectively an active /64". Comcast folks did a ton of testing with the CPEs, and very very few could ask for anything than an active /64, that's why this qual

"effectively an active /64". Comcast folks did a ton of testing with the CPEs, and very very few could ask for anything than an active /64, that's why this qualifier :-) There's active (and pretty cool) work in the HomeNet IETF workgroup, with running code and all (http://www.homewrt.org/doku.php http://www.homewrt.org/doku.php) to make the multi-subnet home network a sane reality. But a different /64 from within the same /56 helps not much, and indeed to correctly reflect the spirit of the discussion in the DHC working group, would be to say "I want to be able to press a button and release my currently used allocation and get some completely new one, be it /48, /56 or whatever". Thanks for the correction!