Not able to spoof MAC address in Kali Linux

Question

The MAC address is spoofed when the network interface is down or not connected to any AP. But as soon as I connect to any access point it changes the spoofed MAC address to the original address.

I tried the following to spoof my MAC address:

ifconfig wlan0 down
macchanger -a wlan0
ifconfig wlan0 up

Even tried to stop and start network-manager with the above command still nothing.

I also changed the MAC changer command with this:

ifconfig wlan0 hw ether XX:XX:XX:XX:XX:XX

And still no luck.

The /etc/NetworkManager/system-connections/ has stored the original MAC address and changes the spoofed address to the original. When I disconnect from the network, the MAC address is changed back to the spoofed address.

When I open the “Settings > Networks,” and go to the AP's settings, I am able to set a clone address and it works perfectly. But I want to be able to change the MAC address from the terminal itself, so I don’t always have to go to the settings to change it.

I even tried to forget the AP and set a new connections with spoofed MAC address, still it always seems to revert back to the original address.

Solution

Just save this code in to a bash script (changeMac.sh) and try running it with elevated permissions (sudo bash changeMac.sh) when you wanna change the mac address.

service NetworkManager stop
ifconfig wlan0 down
macchanger -r wlan0
ifconfig wlan0 up
service NetworkManager start