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Re: Context specific semantics was Re: uncooperative DNSBLs, was several messages

Tony Finch <dot@dotat.at> Fri, 14 November 2008 12:11 UTC

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Date: Fri, 14 Nov 2008 12:11:42 +0000
From: Tony Finch <dot@dotat.at>
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To: Ted Hardie <hardie@qualcomm.com>
Subject: Re: Context specific semantics was Re: uncooperative DNSBLs, was several messages
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References: <Pine.LNX.4.33.0811121942450.12067-100000@egate.xpasc.com> <20081113112302.38928.qmail@simone.iecc.com> <e0c581530811130740g1db5cbfehbcdad361660bf48b@mail.gmail.com> <491C5339.8090801@dcrocker.net> <20081113163833.GN76118@shinkuro.com> <491C699B.4000702@nortel.com> <20081113180841.GO76118@shinkuro.com> <491C711C.3030605@leisi.net> <20081113183919.GR76118@shinkuro.com> <p06240603c542266a5094@[10.227.68.106]> <alpine.LSU.2.00.0811131922190.14367@hermes-1.csi.cam.ac.uk> <p06240605c54237e869f2@[10.227.68.106]>
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On Thu, 13 Nov 2008, Ted Hardie wrote:
>
> That's an example in which an A record in this zone has the standard DNS
> meaning and the expectation is that you can use it construct a URI.
> The other A records have a specific meaning in which the data returned
> indicates that indicates something about its reputation in a specific
> context (what reputation etc. being context specific).  One of these
> things is not like the other.  Using the same record type for both
> creates a need to generate some other context that enables you to figure
> out what was really meant.

I understand the argument that DNSBLs break the DNS data model. What I
don't see is any evidence that this causes interoperability problems.

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
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