Re: [TLS] Mirja Kühlewind's No Objection on draft-ietf-tls-grease-03: (with COMMENT)

Benjamin Kaduk <kaduk@mit.edu> Sat, 17 August 2019 23:07 UTC

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Date: Sat, 17 Aug 2019 18:07:07 -0500
From: Benjamin Kaduk <kaduk@mit.edu>
To: Mirja Kuehlewind <ietf@kuehlewind.net>
Cc: The IESG <iesg@ietf.org>, draft-ietf-tls-grease@ietf.org, tls-chairs@ietf.org, sean@sn3rd.com, tls@ietf.org
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Subject: Re: [TLS] =?iso-8859-1?q?Mirja_K=FChlewind=27s_No_Objection_on_draft?= =?iso-8859-1?q?-ietf-tls-grease-03=3A_=28with_COMMENT=29?=
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On Fri, Aug 16, 2019 at 09:35:09AM +0200, Mirja Kuehlewind wrote:
> Hi Ben,
> 
> Thanks for the explanation.
> 
> I would think this is actually a PS given it extents a protocol based on the extension point this protocol provides. Maybe it is not really adding a new function but it also kind of is: I would call probing for non-compliant implementations a protocol function. I mean if we would specify greasing for a new protocol, I think it would simply be part of the main spec.

Re "part of the main spec", perhaps, but presumably not a
mandatory-to-implement one?
To look at it a different way, what kind of interoperability requirements
does GREASE mandate?  Isn't it just the same interoperability requirements
of the main protocol, i.e., an incremental addition of zero?

-Ben