[arin-ppml] ARIN-2011-5: Shared Transition Space for IPv4 Address Extension - Last Call

George, Wes E [NTK] Wesley.E.George at sprint.com
Mon Apr 25 09:57:49 EDT 2011


-----Original Message-----
From: wherrin at gmail.com [mailto:wherrin at gmail.com] On Behalf Of William Herrin
Sent: Monday, April 25, 2011 9:34 AM
To: George, Wes E [NTK]
Cc: Scott Leibrand; arin-ppml at arin.net
Subject: Re: [arin-ppml] ARIN-2011-5: Shared Transition Space for IPv4 Address Extension - Last Call

> My recommended text: IPv4 addresses used behind a NAT (inside pool) 
> cannot be used for justification of new resources nor counted towards 
> utilization calculations for existing resources.

That explicitly targets a particular technology rather than a class of use. That could be reasonable but beware that resolving
fairness issues with restrictions on specific technologies can be much harder than addressing them for class of use. We could spend
years enumerating and arguing about all the specific technologies that should no longer qualify for IPv4 addresses.

[WEG] And perhaps we will in a follow-on policy, but that's not what I'm trying to accomplish here. My point is to make an update to
*this* policy that addresses my concerns by tying the specific justification for the policy to an explicit recommendation for ARIN
staff on how to implement it. Surgical, not general.

Wes George
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