DNS lookup problems specific the Facebook domains
ivan jr sy
ivan_jr at yahoo.com
Wed Dec 3 01:24:11 UTC 2008
how about llnwd.net
can you ping dns11.llnwd.net from that box?
I believe there's that routing issue, I've troubleshooted this kind of problem in one ISP, my immediate resolution is to have a conditional forwarding for that domain only to openDNS.
--- On Wed, 12/3/08, JINMEI Tatuya / 神明達哉 <Jinmei_Tatuya at isc.org> wrote:
> From: JINMEI Tatuya / 神明達哉 <Jinmei_Tatuya at isc.org>
> Subject: Re: DNS lookup problems specific the Facebook domains
> To: rtanner at linfield.edu
> Cc: "BIND Users Mailing List" <bind-users at isc.org>
> Date: Wednesday, December 3, 2008, 9:31 AM
> At Fri, 21 Nov 2008 10:47:42 -0800,
> Rob Tanner <rtanner at linfield.edu> wrote:
> > I'm trying to figure out if this is my problem or
> a Facebook problem.
> > The first issue was with facebookmail.com. The cache
> entry would become
> > corrupt and I would have to clear cache to get things
> back to working
> > again. Since facebookmail.com resolves to a single IP
> address, my work
> > around was to make my internal DNS authoritative for
> it and the problem
> > went away.
> > A week ago, DNS lookups for facebook.com failed
> completely. Even
> > restarting the DNS service didn't fix the
> problem. Currently, and as a
> > temporary fix only, I am forwarding facebook,com
> lookups to an
> > off-campus server which does not seem to have the
> problem. And now, as
> > of last night, lookups to fbcdn.net (which apparently
> hosts stylesheets)
> > fail completely and I've implemented the same
> forwarding scheme there as
> > well. I've been tracking resource allocations on
> the Linux box that
> > hosts the DNS just to see if there might be some
> connection there, and
> > as far as I can tell, there isn't anything there
> that might explain it.
> > Being that we are a four year residential college, the
> heaviest hit on
> > our DNS servers are students, and Facebook is the
> singularly most
> > heavily used external service. Also, as far as I can
> tell, we are
> > having no problems looking up any other addresses.
> Has anyone else seen
> > this problem with Facebook or does this problem sound
> familiar with any
> > other sites. I'm baffled and any ideas about what
> to look for would be
> > most appreciatd.
> Does this still happen? If so, and if you're using
> BIND 9.5.x prior
> to 9.5.1b3, I'd suggest you upgrade to 9.5.1b3. Prior
> versions of 9.5
> have a bug in cache management that could cause failure of
> resolution for particular domain names.
> JINMEI, Tatuya
> Internet Systems Consortium, Inc.
> bind-users mailing list
> bind-users at lists.isc.org
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