protected function createTunnel()
    {
        $this->runCommand(sprintf('%s %s >> %s 2>&1 &',
            config('tunneler.nohup_path'),
            $this->sshCommand,
            config('tunneler.nohup_log')
        ));
        // Ensure we wait long enough for it to actually connect.
        usleep(config('tunneler.wait'));
    }