Should my Mac address change?

[AC Question]

Mac address changes

We have two tablets (Laser and Pendo). The Laser changes it's Mac address when ever it feels like it, but typically once a week. The Pendo changes it's Mac address whenever it is reset or battery goes flat. We would not be aware of this unless we were Mac filtered on the WiFi router. Pendo is Android 5.1.1, Kernel is 3.4.39, and the Laser is Android 4.4.2 and Kernel is 3.4.67

 

[hallux]

The MAC address should never change, it's typically hard-coded into the wireless card as it's also called the "hardware address" and since some things use that address as an identifier (since it shouldn't ever change) having one that changes randomly can be a problem.

https://en.wikipedia.org/wiki/MAC_address