[arin-ppml] The role of NAT in IPv6

Owen DeLong owen at delong.com
Mon Mar 29 13:41:23 EDT 2010

On Mar 29, 2010, at 8:38 AM, Matthew Kaufman wrote:

> Kevin Kargel wrote:
>>> How about we make easy and cheap PI GUA available and make NAT66 a non-
>>> issue instead.
>>> Owen
>> I second that motion!
>> Kevin
> This is the preferable choice, certainly. The problem is that it needs to be *routable* PI GUA, and that's not a promise ARIN can be in the business of making... but if it isn't routable space, it'll only be useful as the inside network for the NAT66. The only way for this to work is for ARIN to give the same relatively large size blocks to everyone, so that prefix-length filters can't be used. Again, given how much IPv6 space there is, this might actually be the right choice... but that just makes the "easy and cheap PI GUA" argument even harder to win.
> Matthew Kaufman

I was not suggesting anything smaller than a /48 at the ARIN level.  That should resolve the above
concern. Routability then falls to a negotiating matter between the registrant and their ISP(s).


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