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

Question

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

Answer 1

Resolved!

The MAC Address can still be grabbed from the path:

"/sys/class/net/" + networkInterfaceName + "/address";

Simply doing a file read, or a cat of that file will show the Wifi MAC Address.

Network interface names are usually along the lines of "wlan0" or "eth1"