[arin-ppml] Draft Policy 2011-5: Shared Transition Space for IPv4 Address Extension - IAB comment

Owen DeLong owen at delong.com
Wed Jun 29 15:31:36 EDT 2011

On Jun 29, 2011, at 11:48 AM, Joel Jaeggli wrote:

> On Jun 29, 2011, at 11:38 AM, Owen DeLong wrote:
>>> Regardless, 2011-5 does not say minimising NAT444 use is one
>>> of it's goals. Being a /10, I think it is implying that NAT444 is going
>>> to be the default for normal residential customers.
>> Being a /10 it is implying that very large providers anticipate being forced
>> to deploy very large NAT444 regional environments. It does not imply that
>> they expect to force all existing customers into that environment. It does
>> not imply otherwise.
> A /10 or even a /8 imply that the providers will have multiple parallel instances of the prefix just as north american wireless network providers do today.

Certainly if they inflict NAT444 on ALL of their customers, it would imply this.

It may, however, be that they are able to do new customers for quite some time
from a /10 and certainly from a /8 if they are not converting their existing customers.


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