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You can use the arp command on any operating system to find the MAC address of another computer on your network.
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And rather than waiting for longer than that, I just run the command ( sudo macchanger -r -a wlp5s0) again. 1.Open a command prompt or terminal window. With some randomized MAC addresses of the same kind ( -r -a), though, it doesn't conect even after I give it 20 seconds. When I connect with the computer's real MAC address, connecting to the Wifi takes just one second. For privacy, I like to randomize the Mint computer's MAC address before connecting to the WIFI sudo macchanger -r -a wlp5s0. On my Android 10 Samsung phone, the phone randomizes my MAC address before connecting, and I'd like to have that on my Mint, too. When I log into my Mint 19.3 Cinnamon desktop, I turn off the wifi (using the applet by the lower right corner, near the clock), then open the terminal, and run sudo macchanger -r -a wlp5s0.
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