Sometimes, macchanger -r -a seems to give MAC addresses that don't connect to Wifi.

cutepenguin

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For privacy, I like to randomize the computer's MAC address before connecting to the WIFI (sudo macchanger -r -a wlp5s0). When I connect with the computer's real MAC address, connecting to the wifi takes just one second. With some randomized MAC addresses of the same kind (-r -a) , though, it doesn't conect even after I give it 20 seconds. And rather than waiting for longer than that, I just run the command (sudo macchanger -r -a wlp5s0) again. Why is it that some MAC addresses of the same kind (-r -a) don't connect? Is it a limitation of the router I'm connecting to?

How can I avoid choosing randomized MAC addresses that don't work? Should I choose the --ending (shortened to -e) command?

Also, when should we use the --bia (burned-in address) setting?
 

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