[arin-ppml] ARIN-prop-127: Shared Transition Space for IPv4 Address Extension

[Chris Grundemann]

On Fri, Jan 21, 2011 at 11:13, George Bonser <gbonser at seven.com> wrote:
>> >
>> In case anyone missed the subtlety of Wes's statement here... The
>> answer to that question is:
>>
>> A.    A single /10 shared by everyone worldwide
>> B.    Lots of smaller block (likely totaling quite a bit more than a
>> /10)
>>       that are not shared between the different providers each of whom
>>       is forced to go acquire their own.
>>
>> In the event that B transpires, there is exactly 0 gain to any ISP for
>> sharing and many many downsides if they do.
>>
>> As this is unfolding and I consider what will happen if this is not
>> deployed, I now support this proposal.
>>
>> Owen
>
> I am coming around but not quite there yet.  I would like to see a
> sunset on it even if it is 5 years or even 10.

The sunset is built into NAT444 itself, because it breaks stuff:
http://tools.ietf.org/html/draft-donley-nat444-impacts-01. Folks will
only do it as long as they have to (and they will have to, regardless
of this block being available).

~Chris

PS - It is probably not a coincidence that one of the folks who has
done a bulk of the research on NAT444 authored this proposal.

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