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Re: [DNSOP] BULK RR as optional feature

"John R Levine" <johnl@taugh.com> Wed, 29 March 2017 03:47 UTC

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Date: Tue, 28 Mar 2017 22:47:02 -0500
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From: John R Levine <johnl@taugh.com>
To: Evan Hunt <each@isc.org>
Cc: "dnsop@ietf.org" <dnsop@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/BFwGwF-3wGlnOKfRrpNmJd4eA0s>
Subject: Re: [DNSOP] BULK RR as optional feature
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> But if you have a primary that supports BULK and a secondary that doesn't,
> then you have two authoritative servers for the same domain with the same
> serial number but one of is saying NXDOMAIN when the other one returns a
> positive answer.  This is a significant problem, and the draft ought to
> address it.  (Or have I misunderstood something?)

That's exactly the problem -- a server that doesn't handle BULK will 
return the wrong answer.  It might return the BULK record itself or 
NXDOMAIN for an address that BULK would synthesize.

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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