Re: [tsvwg] FQ & VPNs

Jonathan Morton <chromatix99@gmail.com> Sun, 21 February 2021 19:10 UTC

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From: Jonathan Morton <chromatix99@gmail.com>
In-Reply-To: <eef468c8-1152-f6e8-cfbf-c80cb2d465a0@tomh.org>
Date: Sun, 21 Feb 2021 21:10:09 +0200
Cc: Dave Taht <dave.taht@gmail.com>, Ingemar Johansson S <ingemar.s.johansson@ericsson.com>, TSVWG <tsvwg@ietf.org>
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To: Tom Henderson <tomh@tomh.org>
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Subject: Re: [tsvwg] FQ & VPNs
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> On 21 Feb, 2021, at 8:56 pm, Tom Henderson <tomh@tomh.org> wrote:
> 
> 1) upstream a patch to the Linux kernel (and ask other OS vendors to do similarly) to treat ECT(1) as not-ECT
> 2) later add options to enable alternative semantics of ECT(1)
> 
> I don't see any reason to postpone the first step.

I do.

RFC-3168 specifies that routers "treat ECT(0) and ECT(1) as equivalent".  So implementing this first step would cause these Linux AQMs to violate RFC-3168.  I'm sure the kernel maintainers will be justified in rejecting patches on that basis.  Certainly I would raise such objections were such a patch to come to my attention.

To make that objection go away, you must first update and obsolete RFC-3168 so that it no longer contains that requirement.  That requires convincing the IETF that it's a good idea.  Again, I will maintain that it is a spectacularly bad idea.

 - Jonathan Morton