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. Thanks! --- On Wed, 12/3/08, JINMEI Tatuya / 神明達哉 <[EMAIL PROTECTED]> wrote: > From: JINMEI Tatuya / 神明達哉 <[EMAIL PROTECTED]> > Subject: Re: DNS lookup problems specific the Facebook domains > To: [EMAIL PROTECTED] > Cc: "BIND Users Mailing List" <[EMAIL PROTECTED]> > Date: Wednesday, December 3, 2008, 9:31 AM > At Fri, 21 Nov 2008 10:47:42 -0800, > Rob Tanner <[EMAIL PROTECTED]> 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 > name > resolution for particular domain names. > > --- > JINMEI, Tatuya > Internet Systems Consortium, Inc. > _______________________________________________ > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
