Re: [DNSOP] Review of draft-livingood-dns-redirect-00

Jelte Jansen <jelte@NLnetLabs.nl> Mon, 13 July 2009 08:05 UTC

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Date: Mon, 13 Jul 2009 10:02:58 +0200
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References: <C67B83C4.E855%Jason_Livingood@cable.comcast.com> <87ws6enw09.fsf@mid.deneb.enyo.de> <74DA3552-160F-4912-B8B4-FAD506B4D4D1@eng.colt.net>
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Cc: "Livingood, Jason" <Jason_Livingood@cable.comcast.com>
Subject: Re: [DNSOP] Review of draft-livingood-dns-redirect-00
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Ralf Weber wrote:
>> No redirection on SERVFAIL seems to be a strange recommendation.
>> Wouldn't this be a very good reason to provide a diagnostics page,
>> especially if there's been a DNSSEC validation failure?
> This sounds like an excellent idea to help DNSSEC adoption and
> is something that should go into the draft.
> 

then a SERVFAIL will also result in an e-mail bounce that says connection 
refused instead of DNS error (assuming there's no e-mail sink on the host that 
is redirected to). Fun times for the helpdesk.

I have the impression that even though it tries not to, the document still 
assumes that web==internet, mentioning problems 'non-web clients' only as a 
small side-effect, while imho it should be one of the main concerns (the 
www-case is the easy one).

Also, I don't see how the ISP trust anchor for DNSSEC would work (not knowing 
the actual zone that it is supposed to cover in advance); it might be a better 
idea to simply disable all redirects on DO==1.

Then again, I am of the persuasion that messing with a core protocol on the fly 
is simply asking for trouble, and disabling redirection should be top priority 
for everyone.

Jelte