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Re: [DNSOP] Future of "Using DNAME in the DNS root zone for sinking of special-use TLDs" ?

Mark Andrews <marka@isc.org> Wed, 19 October 2016 22:34 UTC

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To: John R Levine <johnl@taugh.com>
From: Mark Andrews <marka@isc.org>
References: <20161019140954.31332.qmail@ary.lan> <20161019191047.5325956F599C@rock.dv.isc.org> <alpine.OSX.2.11.1610191826500.41072@ary.local>
In-reply-to: Your message of "19 Oct 2016 18:28:10 -0400." <alpine.OSX.2.11.1610191826500.41072@ary.local>
Date: Thu, 20 Oct 2016 09:33:52 +1100
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Cc: dnsop@ietf.org
Subject: Re: [DNSOP] Future of "Using DNAME in the DNS root zone for sinking of special-use TLDs" ?
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In message <alpine.OSX.2.11.1610191826500.41072@ary.local>, "John R Levine" wri
tes:
> >> So a cache stub that provides unsigned answers to .local and .onion
> >> queries is just fine.  If the client treats that as SERVFAIL or
> >> whatever it does with unverified answers, that's fine too.
> >
> > SERVFAIL is a temporary error.
> > NXDOMAIN is a permanent error which is cachable.
> >
> > SERVFAIL is not "fine".
> 
> Hmmn.  Keeping in mind that these responses are sent by the cache, could 
> you explain what "cacheable" means in this context?

Applications can, and some do, cache responses.
 
> Regards,
> John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
> Please consider the environment before reading this e-mail. https://jl.ly
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka@isc.org

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