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Re: [DNSOP] New version of draft-ietf-dnsop-rfc7816bis after WG last call

Peter van Dijk <peter.van.dijk@powerdns.com> Wed, 21 April 2021 08:20 UTC

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From: Peter van Dijk <peter.van.dijk@powerdns.com>
To: DNSOP Working Group <dnsop@ietf.org>
Date: Wed, 21 Apr 2021 10:20:33 +0200
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Subject: Re: [DNSOP] New version of draft-ietf-dnsop-rfc7816bis after WG last call
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Hello Paul,

On Thu, 2021-04-15 at 23:15 +0000, Paul Hoffman wrote:
> Everyone (but particularly resolver developers): please review the document carefully, particularly the algorithm in Section 3, to see if it matches what you expect.

PowerDNS implementation notes: 
* we combined step 5 and step 6d (and call it step 5); we fall back to 'no minimisation' on anything that's not a NoError response (but the fallback might be handled by the RFC8020 code, especially if that non-NoError response was NXDOMAIN) (the default for RFC8020 is 'on signed domains only')
* we use 1-1-1-3-3-.. label steps, which is not exactly what section 2.3 describes

(you can find some more details at https://doc.powerdns.com/recursor/appendices/internals.html#qname-minimization )

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

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