privacy - How to get the missing Wifi MAC Address in Android Marshmallow and later?

Android developers looking to get the Wifi MAC Address on Android M may have experienced an issue where the standard Android OS API to get the MAC Address returns a fake MAC Address (02:00:00:00:00:00) instead of the real value.

The normal way to get the Wifi MAC address is below:

final WifiManager wifiManager = (WifiManager) getApplication().getApplicationContext().getSystemService(Context.WIFI_SERVICE);

final String wifiMACaddress = wifiManager.getConnectionInfo().getMacAddress();