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Re: [tcpm] Exceeding value in MSS option?

Joseph Touch <touch@strayalpha.com> Wed, 21 October 2020 16:40 UTC

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From: Joseph Touch <touch@strayalpha.com>
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Date: Wed, 21 Oct 2020 09:40:16 -0700
Cc: Markku Kojo <kojo@cs.helsinki.fi>, "tcpm@ietf.org Extensions" <tcpm@ietf.org>
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Subject: Re: [tcpm] Exceeding value in MSS option?
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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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