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[DNSOP] Re: Last Call: <draft-ietf-dnsop-zoneversion-09.txt> (The DNS Zone Version (ZONEVERSION) Option) to Informational RFC

Petr Špaček <pspacek@isc.org> Thu, 04 July 2024 07:38 UTC

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Date: Thu, 04 Jul 2024 09:38:06 +0200
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To: dnsop@ietf.org, draft-ietf-dnsop-zoneversion@ietf.org
References: <171993753888.678019.3989808418477020923@dt-datatracker-5f88556585-g8gwj>
From: Petr Špaček <pspacek@isc.org>
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Subject: [DNSOP] Re: Last Call: <draft-ietf-dnsop-zoneversion-09.txt> (The DNS Zone Version (ZONEVERSION) Option) to Informational RFC
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Hello everyone,

when re-reading this document I've realized one limitation which is not 
explicitly mentioned:

---
3.2. Responders

... A name server MAY also include more than one ZONEVERSION option in 
the response if it is authoritative for more than one zone of the 
corresponding QNAME. A name server MUST NOT include more than one 
ZONEVERSION option for a given TYPE and LABELCOUNT.
---

The current option cannot be used to represent version info for answer 
like this:

QNAME:
qname.zone1.test. A

Answer:
qname.zone1.test.  CNAME target.zone2.test.
target.zone2.test. A     192.0.2.1

When the responder is authoritative for both zones - zone1.test. and 
zone2.test. - then there's no way to represent ZONEVERSION for zone2.test.


If this was discussed before I've missed it - sorry!

Is this worth solving or at least documenting?

Petr Špaček
Internet Systems Consortium

P.S. I'm away for ~ one week, so I apologize for late responses.


On 02. 07. 24 18:25, The IESG wrote:
> 
> The IESG has received a request from the Domain Name System Operations WG
> (dnsop) to consider the following document: - 'The DNS Zone Version
> (ZONEVERSION) Option'
>    <draft-ietf-dnsop-zoneversion-09.txt> as Informational RFC
> 
> The IESG plans to make a decision in the next few weeks, and solicits final
> comments on this action. Please send substantive comments to the
> last-call@ietf.org mailing lists by 2024-07-16. Exceptionally, comments may
> be sent to iesg@ietf.org instead. In either case, please retain the beginning
> of the Subject line to allow automated sorting.

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