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Re: [DNSOP] Working Group Last Call for draft-ietf-dnsop-edns-chain-query

Tony Finch <dot@dotat.at> Wed, 11 November 2015 10:15 UTC

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Date: Wed, 11 Nov 2015 10:15:53 +0000
From: Tony Finch <dot@dotat.at>
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Cc: dnsop <dnsop@ietf.org>, Paul Hoffman <paul.hoffman@vpnc.org>
Subject: Re: [DNSOP] Working Group Last Call for draft-ietf-dnsop-edns-chain-query
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Tim Wicinski <tjw.ietf@gmail.com> wrote:

> Do we know of any implementations that have tried this?

I mentioned in another message that I did a brief survey of validators. I
was trying to see if there was one I could easily adapt to concurrent
queries. Sadly I couldn't find one. A lot of validators are coupled to
iterative resolvers, which don't have the same opportunity for fast
concurrent validation that stub resolvers have.

I don't know of any existing validators thet make concurrent queries. I
think this is why validation has a reputation for being slow. The problem
is with the implementations, not with the protocol.

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