DNS resolver modules for Perl

Net::DNS is a collection of Perl modules that act as a Domain Name
System (DNS) resolver. It allows the programmer to perform DNS queries
that are beyond the capabilities of gethostbyname and gethostbyaddr.

The programmer should be somewhat familiar with the format of a DNS
packet and its various sections. See RFC 1035 or DNS and BIND (Albitz
& Liu) for details.