Changing mac address bluestack

[postlink] https://the-best-way-of-life-is-islam.blogspot.com/2015/07/changing-mac-address-bluestack.html [/postlink]

I have a rooted blue stack ,when I tried to change its mac address using same methods. As in an Android phone,but no use ,please can any one help me,it has been installed with busy box ,root explorer and android terminal emulator,I have tried turning off the Ethernet using ifconfig eth0 off,but still the same result