#!/usr/bin/perl -l

use strict;
use warnings;
use IO::Socket;
use Socket qw(SOCK_STREAM getaddrinfo);

my $hostname = 'www.perlmonks.org';

my ($err, @res) = getaddrinfo($hostname, "", 
    {socktype => SOCK_STREAM});
die "Cannot getaddrinfo - $err" if $err;
foreach my $ai (@res) {
    my ($err, $ipaddr) = getnameinfo($ai->{'addr'},
        'NI_NUMERICHOST', 'NIx_NOSERV');
    die "Cannot getnameinfo - $err" if $err;
    print "$ipaddr";
}