System reset function MAC address in Android?

In my Android mac address change dynamically, in the moment of switching on Wi-Fi.
The possibility to change his well-known ways (in the console) does not (returns an error).
I think to change the system function that generates this dynamic mac address that it generates is always the same, or read from a file.
Question - how complex is this task that is needed?

The firmware is, of source, of course not.
I suppose that any command-line utility that returns the Mac address only calls the system function, which perhaps is compiled in a separate file and library to work with the network, for example.
And for example this file traversal or replace others.
July 8th 19 at 15:25

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July 8th 19 at 15:27
In Google banned?
The first thing found in Google.
Dear-lover quickly googling, don't waste your and my time in vain. Read the careful statement: "to change his well-known ways (in the console) there." And not through the console and through the files - no (such file is not there). - Camila.Greenfelder32 commented on July 8th 19 at 15:30
https://geektimes.ru/post/239939/ same problem as you and Yes the link in Google - Susanna commented on July 8th 19 at 15:33
a year ago have already seen this article and tried to run, but this file was not. And only now thought to check for that file via the terminal. And he still is! And even all worked out, yay! "File Manager HD" I lied, showing me a part of the path to this file as an empty file, not a folder in which lies the file of WIFI. Everything had to be done through the terminal. - Camila.Greenfelder32 commented on July 8th 19 at 15:36

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