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Re: [DNSOP] I-D Action: draft-ietf-dnsop-nxdomain-cut-01.txt

Stephane Bortzmeyer <bortzmeyer@nic.fr> Tue, 15 March 2016 13:46 UTC

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Date: Tue, 15 Mar 2016 14:45:49 +0100
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: Ted Lemon <Ted.Lemon@nominum.com>
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Subject: Re: [DNSOP] I-D Action: draft-ietf-dnsop-nxdomain-cut-01.txt
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On Tue, Mar 15, 2016 at 11:39:03AM +0000,
 Ted Lemon <Ted.Lemon@nominum.com> wrote 
 a message of 14 lines which said:

> This sounds like a really good rejoinder until you realize that we
> are talking about an optimization that is likely to produce very
> little actual benefit in practice

Side question: why did you not raise the point during the discussions
of draft-fujiwara-dnsop-nsec-aggressiveuse or
draft-wkumari-dnsop-cheese-shop? If this optimisation is useless, we
could drop these drafts as well.

> other than in the presence of certain kinds of PRSD attacks.

By the way, I assume "PRSD attacks" are "random QNAME attacks" but I
don't find a lot of occurrences for this term.

And, no, the problem is not just the random QNAME attacks but, also,
like for the two drafts mentioned above, a better efficiency of the
global DNS (the case of the junk traffic at the root being of course
the most obvious: I assume this is why PowerDNS has a "NXDOMAIN cut"
option just for the root).

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