Re: [tcpm] [Editorial Errata Reported] RFC7323 (6798)

Yaakov Stein <yaakovjstein@gmail.com> Mon, 27 December 2021 05:17 UTC

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From: Yaakov Stein <yaakovjstein@gmail.com>
Date: Mon, 27 Dec 2021 07:16:55 +0200
Message-ID: <CAE8H3+C20vdT0ei4SU2zWtYunvi_TgzGwx97Q9QnrkzoT5hUqw@mail.gmail.com>
To: Carsten Bormann <cabo@tzi.org>
Cc: t petch <ietfa@btconnect.com>, RFC Errata System <rfc-editor@rfc-editor.org>, rs@netapp.com, tcpm@ietf.org, braden@isi.edu, vanj@google.com, david.borman@quantum.com
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Subject: Re: [tcpm] [Editorial Errata Reported] RFC7323 (6798)
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In any case, the same RFC uses the normative "MAY" in several other places,
so these are probably mistakes.

For example,
  The three-byte Window Scale option MAY be sent in a <SYN> segment by a
TCP.
and
  This option MAY be sent in an initial <SYN> segment.

So why
  A random offset may be added to the timestamp clock on a per-connection
basis.
?
Is this may to be considered weaker than the other two?

At first I wondered if there were some good reason for not capitalizing,
i.e., weakening the MAY even further,
but I couldn't come up with any reasonable explanation.


Y(J)S


On Sun, Dec 26, 2021 at 4:39 PM Carsten Bormann <cabo@tzi.org> wrote:

> On 26. Dec 2021, at 12:06, t petch <ietfa@btconnect.com> wrote:
> >
> > One AD once said that a MAY is the same as a MAY NOT and therefore is
> pointless.  Makes sense to me.  I find it hard to come up with a situation
> where 'MAY' has any value.
>
> A MAY for one party means that the other party MUST be able to handle the
> allowed behavior.
> (I.e., not crash, not delete all your files, MAYbe even do something
> meaningful with the first party’s behavior.)
>
> Not at all pointless, if used correctly.
>
> Grüße, Carsten
>
>