[ppml] IPv6 initial allocation policy

[Randy Bush]

>>> 2) We need to work within the constraints of the existing BGP
>>>    protocol for the foreseeable future.
>> thanks for that.

and thanks for that to you too, bill

>>> 3) As long as IPv4 is run in parallel, the number of subnets will
>>>    be the same because it would be too hard to explain to ops how it
>>>    works otherwise.
>> this seems to assume that the v6 net is essentially congruent with
>> the v4 network.  perhaps this assumption is worthy of exploration.
> (which you express gratitude for) then one might rightly presume that
> unless any given ISP is going to replicate the CAPX to buy independent
> gear for building a v6 net that ignores any synergy w/ their v4 net
> and their various peering buddies seems to be a stretch.  e.g. the
> "edge" of bills bait & sushi will be roughly congruent for the v4 and 
> v6 nets due to cost of gear.

"Congruent: adj ... Coinciding exactly when superimposed"

this assumes v6 and v4 are deployed with the identical footprint.
i doubt they will come close to that.  especially given v4 nats
and v6 nats, e.g., shim6.

randy