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

Tim Wicinski <tjw.ietf@gmail.com> Tue, 10 November 2015 23:35 UTC

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From: Tim Wicinski <tjw.ietf@gmail.com>
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Date: Tue, 10 Nov 2015 15:35:46 -0800
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References: <5635CF1A.4030803@gmail.com> <alpine.LSU.2.00.1511091301260.25050@hermes-2.csi.cam.ac.uk> <A8A3F4DA-EE53-4BA4-9EF7-6DCB6120350B@vpnc.org> <alpine.LSU.2.00.1511091651330.25050@hermes-2.csi.cam.ac.uk> <E78EC567-FE6A-41B5-92DF-084145171455@vpnc.org> <alpine.LSU.2.00.1511102129030.24500@hermes-2.csi.cam.ac.uk>
To: Tony Finch <dot@dotat.at>
Archived-At: <http://mailarchive.ietf.org/arch/msg/dnsop/8-svvMH4Xt8_w4yJgDLinsGQIh8>
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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Do we know of any implementations that have tried this? 

From my high tech gadget

> On Nov 10, 2015, at 13:29, Tony Finch <dot@dotat.at> wrote:
> 
> Paul Hoffman <paul.hoffman@vpnc.org> wrote:
> 
>>> With the current DNS protocol, a stub resolver can get all the records it
>>> needs to validate a response in 1RTT, by sending multiple concurrent
>>> queries for all the possible delegation points in the QNAME.
>> 
>> I'm confused. How does the stub know all of those ahead of time?
> 
> The possible delegation points are where the dots are in the QNAME.
> 
> Tony.
> -- 
> f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
> Trafalgar: Easterly 5 to 7 in far southeast, otherwise variable 3 or 4.
> Moderate, occasionally rough in far southeast. Mainly fair. Mainly good.
> 
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