query('8.8.8.8:53', $ipv4Query)->done(function (Message $message) { foreach ($message->answers as $answer) { echo 'IPv4: ' . $answer->data . PHP_EOL; } }, 'printf'); $executor->query('8.8.8.8:53', $ipv6Query)->done(function (Message $message) { foreach ($message->answers as $answer) { echo 'IPv6: ' . $answer->data . PHP_EOL; } }, 'printf'); $loop->run();