BIND only resolves hostname on the second attempt
Luigi Semenzato
luigi at semenzato.com
Wed Nov 10 19:52:12 UTC 2004
I would like to add a comment from my own experience.
I had exactly the same problem: slow resolution of uncached domains,
about 4-5 seconds. On the Mac, that's enough to time out some
resolver routines, such as those used by Safari, but I could see
the delays from Linux too. I was running bind 9.2.4. I upgraded
to 9.3.0 and made sure that named gets started with the -4 option.
The problem is now gone.
Had I not found this thread I would still be scratching my head.
This problem makes me wonder if my choice of bind9 for a small
home setup is overkill.
Thank you!
Luigi
Mark Andrews <Mark_Andrews at isc.org> wrote in message news:<cm6k42$1182$1 at sf1.isc.org>...
> > on 10/28/04 6:23 PM, Brian Kendig at brian at enchanter.net wrote:
> >
> > > I upgraded to BIND 9.3.0 and set "edns-udp-size 512;" in the options
> > > section of my named.conf, but the same problem persists.
> >
> > More than likely not the issuse, start named with the -4 option and you
> > should be all set.
> > --
> > -------------------------------------------------------------
> > Scott Haneda Tel: 415.898.2602
> > <http://www.newgeo.com> Fax: 313.557.5052
> > <scott at newgeo.com> Novato, CA U.S.A.
>
> Looking at http://www.macfixit.com/article.php?story=20041028075356258
> anything which causes a retry (edns and firewall, ipv6 and
> no IPv6 connectivity) results in the observed behaviour.
>
> Clearly the resolver timeout is way too short as it doesn't
> allow for packet loss.
>
> Mark
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