protected static function ip()
	{
		$request = System::getContainer()->get('request_stack')->getCurrentRequest();

		if ($request === null)
		{
			return '';
		}

		return $request->getClientIp();
	}
protected static function ip()
	{
		$request = System::getContainer()->get('request_stack')->getCurrentRequest();

		if ($request === null)
		{
			return '';
		}

		return $request->getClientIp();
	}
Return the real REMOTE_ADDR even if a proxy server is used

@return string The IP address of the client