Re: [dbound] draft-brotman-rdbd

"John Levine" <johnl@taugh.com> Thu, 09 May 2019 19:42 UTC

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From: "John Levine" <johnl@taugh.com>
To: dbound@ietf.org
Cc: niall.oreilly@ucd.ie
In-Reply-To: <130D3CBF-277E-49FE-B353-6CD8AE15FC61@ucd.ie>
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Subject: Re: [dbound] draft-brotman-rdbd
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In article <130D3CBF-277E-49FE-B353-6CD8AE15FC61@ucd.ie>; you write:
>> I think that if
>> you try to use them anywhere else, you'll find way too much software
>> that has baked in assumptions that they don't belong there.
>
>I'm not sure what kind of software might have such assumptions
>baked in.  The very small sample that my provisioning chain includes
>(Emacs, dnssec-signzone, nsd, unbound, zonemaster) shows no problem
>of this kind.

The usual problem is middleboxes.

>I have a strong suspicion that any provisioning chain needing
>modification to accommodate innovative uses of PTR would also need
>work to add support for the new RRtypes proposed in the draft, and
>that the effort involved in either case might be roughly commensurate.

Commensurate but different.  Adding new rrtypes is a well known misery
with the problem being primarily in the provisioning crudware that
people use to manage their zones.  Finding unhelpful middleboxes is a
more distributed problem.