Re: [Int-area] I-D Action: draft-ietf-intarea-frag-fragile-00.txt

Joe Touch <touch@strayalpha.com> Thu, 16 August 2018 12:19 UTC

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From: Joe Touch <touch@strayalpha.com>
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Date: Thu, 16 Aug 2018 05:19:04 -0700
Cc: Mikael Abrahamsson <swmike@swm.pp.se>, int-area@ietf.org
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To: Ole Troan <otroan@employees.org>
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Subject: Re: [Int-area] I-D Action: draft-ietf-intarea-frag-fragile-00.txt
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> On Aug 16, 2018, at 1:57 AM, Ole Troan <otroan@employees.org> wrote:
> 
> IPv4 fragments do have a higher drop probability than other packets. Just from the fact that multiple end-users are sharing a 16 bit identifier space.

It’s really the fact that NATs that process fragments don’t reassemble before translating and/or don’t rate limit fragments they generate as already required by 791 (as explained in 6884).

A NAT that is broken isn’t helping users share addresses. It’s just broken.

Joe