Change mac address with macchanger in Kali

original mac address:

ifconfig eth0

Turn off your network interface:

ifconfig eth0 down

Use macchanger to randomly generate new MAC address and assign it to eth0 network interface:

macchanger -r eth0
ifconfig eth0 up

If for example a specific MAC address is required use macchanger as follows:

macchanger -m b2:aa:0e:56:ed:f7 eth0

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