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Re: [dnssd] draft-sekar-dns-ul

Peter van Dijk <peter.van.dijk@powerdns.com> Mon, 23 August 2021 18:04 UTC

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From: Peter van Dijk <peter.van.dijk@powerdns.com>
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Date: Mon, 23 Aug 2021 20:04:18 +0200
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Subject: Re: [dnssd] draft-sekar-dns-ul
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On Tue, 2021-07-27 at 23:01 +0000, Ted Lemon wrote:
> So, please take a look at the document and comment here. You can find a copy of the document here: https://www.ietf.org/archive/id/draft-sekar-dns-ul-03.html

Section 3 says:

> Encoding the Update Lease Lifetime in an OPT RR requires minimal
modification to a name server's front-end, and will cause servers that
do not implement this extension to automatically return a descriptive
error (NOTIMPL).

In queries and responses, servers normally ignore options they do not
recognise, so I suspect this sentence is wrong. The fix seems simple,
though - a client checks for the option in the response, and if it's
not there, the client knows that a lease limit has not been applied.

Kind regards,
-- 
Peter van Dijk
PowerDNS.COM BV - https://www.powerdns.com/

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