Re: [DNSOP] Fwd: New Version Notification for draft-bellis-dnsop-edns-tags-00.txt

Ray Bellis <ray@bellis.me.uk> Tue, 05 March 2019 09:27 UTC

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From: Ray Bellis <ray@bellis.me.uk>
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Subject: Re: [DNSOP] Fwd: New Version Notification for draft-bellis-dnsop-edns-tags-00.txt
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On 05/03/2019 09:11, Shane Kerr wrote:

> I don't see much value in this beyond the already-standardized EDNS 
> range reserved for local/experimental use.

Shane,

The additional value is being able to use the feature in off-the-shelf 
DNS software.

Stretching the analogy to BGP communities slightly (the authors had 
already discussed this internally when working on the draft, and Wes has 
made that comparison too):

Folks *could* have decided to use some unassigned BGP Path attribute 
value to carry similar information, but each implementor would have had 
their own special version of it.   Making it _standardised_ is what 
allows support to be ubiquitous (and interoperable).

Ray