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Date:      Mon, 28 Jan 2008 13:05:51 +0100 (CET)
From:      Harti Brandt <hartmut.brandt@dlr.de>
To:        Doug Barton <dougb@FreeBSD.org>
Cc:        Alexander Leidinger <Alexander@Leidinger.net>, current@FreeBSD.org, =?UTF-8?B?RGFnLUVybGlu?= =?UTF-8?B?ZyBTbcODwrhyZ3Jhdg==?= <des@des.no>
Subject:   Re: resolver change?
Message-ID:  <20080128125649.D18619@knop-beagle.kn.op.dlr.de>
In-Reply-To: <479D745C.3090207@FreeBSD.org>
References:  <86d4rn1kln.fsf@ds4.des.no> <ygeejc3ck1z.wl%ume@mahoroba.org> <86sl0jywii.fsf@ds4.des.no> <yged4rncetu.wl%ume@mahoroba.org> <86abmryun9.fsf@ds4.des.no> <20080127213851.506zunyhwwg4wsgs@webmail.leidinger.net> <479CFD3B.6020806@dlr.de> <479D745C.3090207@FreeBSD.org>

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On Sun, 27 Jan 2008, Doug Barton wrote:

DB>Hartmut Brandt wrote:
DB>> Alexander Leidinger wrote:
DB>>> Quoting Dag-Erling Sm=FF=FF=FF=FFrgrav <des@des.no> (from Sun, 27 Jan=
 2008
DB>>> 19:45:46 +0100):
DB>>>
DB>>>> Hajimu UMEMOTO <ume@mahoroba.org> writes:
DB>>>>> Dag-Erling Sm=FF=FFrgrav <des@des.no> writes:
DB>>>>> > OK, so the resolver now uses a process-internal cache?  Is there
DB>>>>> any way
DB>>>>> > to turn it off?
DB>>>>> No, our resolver doesn't have a process-internal cache at all.
DB>>>>
DB>>>> So what's going on?
DB>>>>
DB>>>> Looking back through my logs, it was working correctly as late as
DB>>>> January 13, so something broke between then and January 21.
DB>>>>
DB>>>> My name server does *not* forward queries, it goes straight to the
DB>>>> source.  Everything looks fine if I run host(1) multiple times, it o=
nly
DB>>>> seems to fail when successive lookups are made from the same process=
=2E
DB>>>
DB>>> Are you seeing this with or without activated nscd/cached?
DB>>=20
DB>> I see the same effect as DES. Tried to disable hosts caching in nscd.
DB>> Didn't change anything.
DB>
DB>What happens if you disable nscd completely?

Could it be that this was a problem with the DNS server? Today it doesn't
matter whether I disable or enable the cache, I get three different IP
addresses for 5 servers in ntp.conf. Maybe it was rotating the addresses to
slow or what?

harti
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