I suspect the problem is not specifically related to linux
rather is probably due to the latest ISC Bind release. Note
that when you try to run programs such as nsloookup using
the latest BIND version (bundled with RH7.1) you are
presented with the rather annoying;
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
' option to prevent this message from appearing.
Judging the output of dnsquery, using dig may work just fine
for you anyway. It's bundled with RH7.1
Well, its not a perl specific answer, but a good question
nonetheless. Hope that helps.