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Re: [DNSOP] Closing out issues in draft-ietf-dnsop-resolver-priming

"Darcy Kevin (FCA)" <kevin.darcy@fcagroup.com> Fri, 16 October 2015 17:08 UTC

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From: "Darcy Kevin (FCA)" <kevin.darcy@fcagroup.com>
To: 神明達哉 <jinmei@wide.ad.jp>, Paul Vixie <paul@redbarn.org>
Thread-Topic: [DNSOP] Closing out issues in draft-ietf-dnsop-resolver-priming
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Date: Fri, 16 Oct 2015 17:07:27 +0000
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References: <8149BC4D-F11E-4E4F-BBB8-C38D865A4184@vpnc.org> <20151016161831.58bdf78d@pallas.home.time-travellers.org> <56211942.20206@redbarn.org> <CAJE_bqcxjC=zS8tj6tKGX18UeEFm6GHcyRhjC7AFdh3x9-L=vA@mail.gmail.com>
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Cc: Shane Kerr <shane@time-travellers.org>, dnsop WG <dnsop@ietf.org>, Paul Hoffman <paul.hoffman@vpnc.org>
Subject: Re: [DNSOP] Closing out issues in draft-ietf-dnsop-resolver-priming
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Let's see, millions of full-service resolvers, times the packet-count differential between UDP and TCP, times the average reload/restart frequency of those full-service resolvers per day/week/month. Can't a case be made from sheer volume?

Sorry for bringing math into the discussion.

									- Kevin

-----Original Message-----
From: DNSOP [mailto:dnsop-bounces@ietf.org] On Behalf Of ????
Sent: Friday, October 16, 2015 12:49 PM
To: Paul Vixie
Cc: Shane Kerr; dnsop WG; Paul Hoffman
Subject: Re: [DNSOP] Closing out issues in draft-ietf-dnsop-resolver-priming

At Fri, 16 Oct 2015 08:35:30 -0700,
Paul Vixie <paul@redbarn.org> wrote:

> > I have separate issue, which is this text:
> >
> >     The priming query MUST be sent over UDP (section 6.1.3.2 of
> >     [RFC1123]).
> >
> > This seems like a super-strong recommendation that doesn't actually 
> > help anything in operation.  Further, it seems to conflict with a 
> > general desire to make TCP the equal of UDP in DNS.
>
> i do not share, or approve of, any such "general desire". i think the 
> text is correct as written.

Although the existence of the "general desire" might be debatable, I think Shane has a valid point.  The requirement level of the TCP support has been already tightened in RFC5966 (from a SHOULD in
RFC1123 to REQUIRED), so it doesn't make much sense to me to use a MUST in this document referring to the older RFC.  At the very least, if we want to keep the MUST, there should be a different reason than the reference to RFC1123.

--
JINMEI, Tatuya

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