I exchanged some e-mail today with reader, Curtis and as result have fixed a typo and added some error checking to handle a problem that he was seeing (though I didn't, I suspect it has to do with different installed versions of some of the Perl packages, so I'll continue to look into the problem and will probably release another update in the next few days).  Version 1.5.1 can  be found here: http://handlers.sans.edu/jclausing/ipv6/dumpdns.pl

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Jim Clausing, GIAC GSE #26
jclausing --at-- isc [dot] sans (dot) edu