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: 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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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
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