This is a simple example - but note that you might be seeing failures because the host you're querying win isn't fully-qualified..?

#!/usr/bin/perl

use strict;
use warnings;
use Net::DNS;

sub lookupHost
{
    my( $host ) = ( @_ );

    my @results;

    my $res   = Net::DNS::Resolver->new;
    my $query = $res->search($host);

    if ($query) {
        foreach my $rr ($query->answer) {
            push( @results, $rr->address ) if ( $rr->type eq "A" );
        }
    } else {
        warn "query failed: ", $res->errorstring, "\n";
    }

    return( @results );
}


my @out = lookupHost( "google.com" );
foreach my $ip ( @out )
{
    print "result: $ip\n";
}
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