Re: [regext] WG LAST CALL: draft-ietf-regext-unhandled-namespaces-03

Martin Casanova <> Fri, 30 October 2020 11:44 UTC

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From: Martin Casanova <>
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Date: Fri, 30 Oct 2020 12:44:40 +0100
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Subject: Re: [regext] WG LAST CALL: draft-ietf-regext-unhandled-namespaces-03
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As an implementer of that draft and having it in productive use with
poll messages for quite a while now
I was able to run some analysis concerning its potential risks to break
clients on a real world example.

We are sending out poll messages including the ChangePoll Element
(rfc-8590) and render the poll message according to
draft-ietf-regext-unhandled-namespaces if the client did not include the
ChangePoll extension in its login services.

Out of 78 registars 21 were receiving such messages rendered according
to draft-ietf-regext-unhandled-namespaces
 since they did not include ChangePoll extensions in the login services.
(the others did include ChangePoll)

Out of these 21 registrars in questions we had zero feedback that any
client broke.

To be fair, we also did not get any positive feedback but I can say that
at least from our experience it is
totally save to implement the draft and breaking client where not an
issue at all.

Therefore here my up vote +1.



On 26.10.20 13:42, Gould, James wrote:
> Patrick,
> We'll agree to disagree with the value and risk of draft-ietf-regext-unhandled-namespaces, since I can't think of a theoretical or real risk to existing clients with at least two independent implementations.  Your objection can be included in the document shepherd writeup, but as noted before there is no consensus to make a change.      

Martin Casanova, Domain Applications
Werdstrasse 2, P.O. Box, 8021 Zurich, Switzerland 
phone +41 44 268 15 55, direct +41 44 268 16 25,