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Re: [dbound] [dmarc-ietf] Fwd: New Version Notification for draft-dcrocker-dns-perimeter-00.txt

Dave Crocker <dhc@dcrocker.net> Wed, 03 April 2019 18:22 UTC

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To: John Levine <johnl@taugh.com>, dmarc@ietf.org
Cc: dbound@ietf.org
References: <20190403175820.8391420115F376@ary.qy>
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From: Dave Crocker <dhc@dcrocker.net>
Organization: Brandenburg InternetWorking
Message-ID: <2445c121-f77b-0fa2-ca6a-402479abb5a7@dcrocker.net>
Date: Wed, 03 Apr 2019 11:22:50 -0700
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Subject: Re: [dbound] [dmarc-ietf] Fwd: New Version Notification for draft-dcrocker-dns-perimeter-00.txt
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On 4/3/2019 10:58 AM, John Levine wrote:
> In article <3bebe973-0536-96cd-983e-240ba43463c4@dcrocker.net> you write:
>> Comments eagerly sought, of course.
> 
> This seems sorta kinda like my dbound draft, only with _tagged TXT
> records rather than a new rrtype, and (unless I missed something) a
> hope that somehow you can use a yet to be invented cache to avoid
> walking up the tree, where mine used wildcards to do one lookup per
> boundary regardless of the tree depth.


Section 7's suggestion for using Additional information does not rely on 
caching.

Reliance on existing wildcard depends on propagation of a new RR, which 
continues to be problematic.  There's a reason the Attrleaf table has so 
many entries...

And while there is certainly conceptual overlap with your earlier 
proposal, the current one has differences I'd class as significant.

d/
-- 
Dave Crocker
Brandenburg InternetWorking
bbiw.net

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