2. App-level ‘ping’ 

my $opt = getopts(
    'ip_address|ip-address|i=s',
);

my $target_host = $url->host;
my $ip_addr = ip_from_name($target_host) // 'NXDOMAIN';
if($opt->{ip_address}) {
    $ip_addr .= " overridden to $opt->{ip_address}";
}
print "Sending message to: $target_host ($ip_addr)\n";