How to Change Mac OS X Leopard Network Interface MAC Address

I’ve found that there is an easy way to spoof your Network Interface MAC Address…
Why we spoof the MAC Adress…??
Spoof MAC address is used when we need to be another computer…
For example… My ISP has a policy to customer, so only registered computer MAC Adress can be connected to the internet…. So when you connected the cable to other devices like your notebook…
Your notebook can’t access the internet…
It can be solved by spoofing your Network Interface MAC Address ( in this example i use device en0/ LAN)
Go to Terminal in Applications > Utilities > Terminal

16:~ hanskristian$ sudo -s
Password:
16:~ root#

Now You’ll be root in the system
Check your Network interface

16:~ root# ifconfig -l

this command will list your network interface… in this example i use en0 interface

16:~ root# ifconfig en0 ether XX:XX:XX:XX:XX:XX

change XX:XX:XX:XX:XX:XX with your new MAC Address ( In this case i change my notebook mac adress with my computer ehternet mac address)
your network interface will have new MAC adress, check it by this command

16:~ root# ifconfig en0 grep ether

nb: the changes aren’t permanent, if you reboot your macbook.. The spoofed MAC Adress will be removed..