Net::DNS::Resolver::Recurse - Perform recursive dns lookups use Net::DNS::Resolver::Recurse; my $res = Net::DNS::Resolver::Recurse->new; This module is a sub class of Net::DNS::Resolver. So the methods for Net::DNS::Resolver still work for this module as well. There are just a couple methods added:

hints
Initialize the hint servers. Recursive queries need a starting name server to work off of. This method takes a list of IP addresses to use as the starting servers. These name servers should be authoritative for the root (.) zone. $res->hints(@ips); If no hints are passed, the default nameserver is asked for the hints. Normally these IPs can be obtained from the following location: ftp://ftp.internic.net/domain/named.root

recursion_callback
This method is takes a code reference, which is then invoked each time a packet is received during the recursive lookup. For example to emulate dig's "+trace" function: $res->recursion_callback(sub { my $packet = shift; $_->print for $packet->additional; printf(";; Received %d bytes from %s\n\n", $packet->answersize, $packet->answerfrom ); });

query_dorecursion
This method is much like the normal query() method except it disables the recurse flag in the packet and explicitly performs the recursion. $packet = $res->query_dorecursion( "www.netscape.com.", "A"); Rob Brown, bbb@cpan.org Net::DNS::Resolver, Copyright (c) 2002, Rob Brown. All rights reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. $Id: Recurse.pm 102 2004-08-12 05:16:06Z ctriv $