For a good description, with the code example main.c of just one of the recent DNS exploits (Multiple Race Exploiter) see:

http://www.securebits.org/dnsmre.html

WARNING: This is a RED FLAG 

While it's important that you as a Linux Professional understand these exploits, running this program against real live DNS servers that you DO NOT ADMINISTER outside of a TEST LAB will certainly garner you NSA monitoring  ("Meet the Fed") status, and/or the honor of free classified "PenPal" ads from JAIL in the back page of the 2600 Magazine. 

http://wapedia.mobi/en/Obnosis || http://en.wiktionary.org/wiki/obnosis | Obnosis.com (503)754-4452


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Store, manage and share up to 5GB with Windows Live SkyDrive.
http://skydrive.live.com/welcome.aspx?provision=1?ocid=TXT_TAGLM_WL_skydrive_102008