[EMAIL PROTECTED] ("John Neiberger") writes: > ... Beginning sometime very recently, our DNS servers are not able to > resolve www.yahoo.com. I have no problem if I point my PC to an external > DNS server, but when I point it back at our internal servers I get > timeouts when trying to resolve that domain. > > ... We're running a version of BIND 8 on Solaris 9, and it's likely that > this behavior began this weekend after we applied the most recent patch > cluster for Solaris 9 and rebooted the server. For quite a while, all > external DNS was failing and we still have some odd intermittent problems > but the most noticable issue that is 100% reproducible is the failure to > resolve Yahoo addresses. > > ...
you'll need to get tcpdump running, and watch what queries are sent to whom, and whether a nonrecognizable response is coming back. this sounds like a problem with your ip source address or port number, rather than EDNS or packet size. -- Paul Vixie