Re: [mif] [dnsext] [DNSOP] 2nd Last Call for MIF DNS server selection document

Doug Barton <dougb@dougbarton.us> Mon, 24 October 2011 20:52 UTC

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Date: Mon, 24 Oct 2011 13:52:34 -0700
From: Doug Barton <dougb@dougbarton.us>
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To: Keith Moore <moore@network-heretics.com>
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Cc: mif@ietf.org, dnsop@ietf.org, dnsext@ietf.org, pk@isoc.de, Alex Bligh <alex@alex.org.uk>, dhcwg@ietf.org
Subject: Re: [mif] [dnsext] [DNSOP] 2nd Last Call for MIF DNS server selection document
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On 10/24/2011 05:16, Keith Moore wrote:
> That's the point - search lists are not appropriate most of the time, and it's very hard for software to distinguish the cases where they are potentially appropriate from the cases when they're not, and it's not possible for software to do this in all cases.

There's been something missing from this discussion, and I finally put
my finger on it. TMK most stub resolvers have an option similar to this
one from ISC's:

ndots:n
        sets a threshold for the number of dots which
        must appear in a name given to res_query() (see
        resolver(3)) before an initial absolute query
        will be made.  The default for n is “1”, mean‐
        ing that if there are any dots in a name, the
        name will be tried first as an absolute name
        before any search list elements are appended to
        it.

So it seems that this question is already a matter of local policy,
which given the number and quality of the divergent views seems
eminently reasonable. Can we move on now?


Doug

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