So you prevent MAC address tracking by using an identifier-free link layer protocol [3] (this doesn't exist in practice, only researchers made a demo showing its possible).
Or you could just randomize your MAC occasionally. If you're not even connected to a network (which is the situation we're discussing), just scanning, there's no reason for keeping a static MAC.
Or you could just randomize your MAC occasionally. If you're not even connected to a network (which is the situation we're discussing), just scanning, there's no reason for keeping a static MAC.