Network troubleshooters soon learn that the first place to look when the network stops working is DNS... and soon after that, they learn that the in-the-box DNS troubleshooting tool, nslookup, is a pretty weak answer -- but this session remedies that with a clear, step-by-step set of diagnostic approaches and prescriptions for DNS ills of all stripes.   Give your troubled DNS queries a thorough workup with Network Monitor, and find out why those dynamic updates aren't happening. Get the scoop on the dread "EDNS flu," an ailment endemic to Server 2008 and 2008 R2 boxes. Take your DNS system's pulse with DNSLint. Take a sample of your DNS output with a close examination of your logs, and more. Attend this talk and you'll soon be known as "Doctor DNS!"   -Become familiar with common DNS troubles and their solutions -Know the best DNS troubleshooting tools and how to use them -Grasp effective DNS troubleshooting techniques -Find out about NEW DNS problems that appear on newer versions of Server, and their solutions