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Re: [v6ops] new draft: draft-ietf-v6ops-6204bis

Stuart Cheshire <cheshire@apple.com> Thu, 13 October 2011 04:40 UTC

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From: Stuart Cheshire <cheshire@apple.com>
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Date: Wed, 12 Oct 2011 21:39:39 -0700
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References: <201110111355.p9BDt1M23806@ftpeng-update.cisco.com> <282BBE8A501E1F4DA9C775F964BB21FE3EB758B7A8@GRFMBX704BA020.griffon.local> <1B8E4C5A-D08B-4F37-B701-A39745136A33@cisco.com> <750BF7861EBBE048B3E648B4BB6E8F4F1FDCA4C3@crexc50p> <282BBE8A501E1F4DA9C775F964BB21FE3EB758B7AB@GRFMBX704BA020.griffon.local> <B06E5723-1EE5-4808-AE7F-3D98EB3F17CE@cisco.com>
To: Fred Baker <fred@cisco.com>
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Cc: v6ops@ietf.org, pcp-chairs@tools.ietf.org, draft-ietf-pcp-base@tools.ietf.org, draft-ietf-v6ops-6204bis@tools.ietf.org, Ullio Mario <mario.ullio@telecomitalia.it>, Brett Halle <brett@apple.com>
Subject: Re: [v6ops] new draft: draft-ietf-v6ops-6204bis
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On 12 Oct 2011, at 1:45, Fred Baker wrote:

> Adding the PCP chairs and the authors of http://datatracker.ietf.org/doc/draft-ietf-pcp-base; folks, what is your plan for PCP?
> 
> Roberta, I understand now that you're looking at a WAN-side solution. Again, I'm looking for comment from other operators. But if we add it to this spec, I would like to see PCP in the IESG's hands as we send 6204bis in. I will note that this is about IPv4 life extension, not IPv6 deployment.
> 
> On Oct 12, 2011, at 4:21 AM, Maglione Roberta wrote:
> 
>> Hello Fred and Barbara,
>> When a Carrier Grade NAT is deployed in the Service Provider's network PCP could be seen as the geographic extension of UPnP as it may be used in order to control how incoming packets are forwarded by the upstream device.
>> 
>> In my opinion PCP is not a topic strictly restricted to the homenet WG, but it may belong to this document as this draft already contains DS-Lite and PCP and DS-Lite could be use together in the Service Provider's network.

>From the beginning PCP has been designed as a protocol for managing port mappings in *all* NATs, both small-scale home NATs and large-scale carrier NATs.

I believe the protocol as we currently have it designed meets both those needs very well.

I don't see any need for different LAN and WAN protocols -- just as we don't have a LAN version and a WAN version of HTTP.

Stuart Cheshire <cheshire@apple.com>
* Wizard Without Portfolio, Apple Inc.
* www.stuartcheshire.org

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