Re: [tcpm] Exceeding value in MSS option?

Joe Touch <touch@strayalpha.com> Wed, 21 October 2020 17:15 UTC

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From: Joe Touch <touch@strayalpha.com>
In-Reply-To: <CAM4esxTfWwOzgVQgPnzLBB1vzAYux9EkGghNOAk8JPv1tcM5Ww@mail.gmail.com>
Date: Wed, 21 Oct 2020 10:15:43 -0700
Cc: Michael Tuexen <Michael.Tuexen@lurchi.franken.de>, "tcpm@ietf.org Extensions" <tcpm@ietf.org>, Markku Kojo <kojo@cs.helsinki.fi>
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To: Martin Duke <martin.h.duke@gmail.com>
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Subject: Re: [tcpm] Exceeding value in MSS option?
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IMO let 6691 speak to that. Ie, as explained in 6691

> On Oct 21, 2020, at 9:42 AM, Martin Duke <martin.h.duke@gmail.com> wrote:
> 
> 
> OTOH 1122 is a standard and 6691 is Informational.
> 
>> On Wed, Oct 21, 2020 at 9:40 AM Joseph Touch <touch@strayalpha.com> wrote:
>> FWIW - when citing requirements established elsewhere, IMO it’s always better to NOT repeat it as a requirement elsewhere. It makes updates very difficult.
>> 
>> I.e., avoid 2119 language when referring to an existing requirement and clearly indicate that this is a summary (“already a requirement”), e.g.:
>> 
>> ---
>> Note that it is already a requirement that TCP implementations consume payload space
>> instead of increasing datagram size when including IP or TCP options
>> in an IP packet to be sent [RFC6691].
>> --
>> 
>> FWIW - I would avoid citing 1122 because the entire issue is addressed definitely in 6691.
>> 
>> Joe
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