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Re: [DNSOP] Comment on section 2 of draft-ietf-dnsop-nxdomain-cut-05.txt

Stephane Bortzmeyer <bortzmeyer@nic.fr> Thu, 29 September 2016 11:54 UTC

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Date: Thu, 29 Sep 2016 13:49:55 +0200
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: Matthew Pounsett <matt@conundrum.com>
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References: <29B4A430-80C7-44C8-A6FA-54A1560D3FD7@icann.org> <20160927004928.22EAE5515C31@rock.dv.isc.org> <89B42AE2-0377-42A4-B943-E65C52B7CB55@icann.org> <CAHPuVdVneekn9NL_u72KFk7aFQ8uWLkUDqAaW9c46SG-KDVuMg@mail.gmail.com> <d1da7014063b4525a25502408d9fbdc1@SC58MEXGP032.CORP.CHARTERCOM.com> <CAHPuVdVV_fqaiMuLuFKudFaT=FXTKE57+aYuf_HS+x-0OkOk0g@mail.gmail.com> <59500ec16f1041558d0b9f6646094ebf@SC58MEXGP032.CORP.CHARTERCOM.com> <CAAiTEH-_mefMBTKSu8G0mT7rO=GzQk0Bn1tKYcgCsa2pLhutuw@mail.gmail.com>
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Cc: Edward Lewis <edward.lewis@icann.org>, "dnsop@ietf.org" <dnsop@ietf.org>, "White, Andrew" <Andrew.White2@charter.com>
Subject: Re: [DNSOP] Comment on section 2 of draft-ietf-dnsop-nxdomain-cut-05.txt
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On Tue, Sep 27, 2016 at 03:46:16PM -0700,
 Matthew Pounsett <matt@conundrum.com> wrote 
 a message of 137 lines which said:

> My rationale is that if foo.bar.example.org were still a valid name

By "valid name", do you mean "something which existed less than $TTL
seconds ago"?

> at the time that the bar.example.org NXDOMAIN response was issued,
> then NXDOMAIN was not the correct response.  It would be
> inappropriate to answer for foo.bar.example.org out of the cache in
> that case.

The DNS is full of these (minor) inconsistencies. As Mark Andrews
said, temporal issues are not new.

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