Android - Getting IP of a WiFi-router
===

I used function which got IP address like below:

    public static final String IPV4_REGEX = "\\A(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z";
	public static String getLocalIpAddress() {
	    try {
	        for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
	            NetworkInterface intf = en.nextElement();
	            for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
	                InetAddress inetAddress = enumIpAddr.nextElement();
	                if (!inetAddress.isLoopbackAddress()&&(inetAddress.getHostAddress().toString().matches(IPV4_REGEX))) {
	                    return /*inetAddress.getHostName()+"~|~"+*/inetAddress.getHostAddress().toString();
	                }

	            }
	        }
	    } catch (SocketException ex) {
	        ex.printStackTrace();
	    }
	    return null;
	}	
But I noticed it gets first `appropriate` IP address. It works fine till I insert SIM card. After that it gets mobile's IP, not local WiFi! So I'd like to know how to exclude this situation? I want to get only local IP of WiFi-router. Thanks a lot. 