I was looking for some helpful data to overcome the mac changing problem , I have been using Ubuntu 8.10 version for 2 months and each time i face with any sort of problem , i never give up before i get the solution.

Here i will tell how to change mac address step by step Firstly open the shell whatever you use , i use “guake-Terminal “then write the commands;;

sensei@sensei:~$ sudo ifconfig eth0 down //here i take the eth0 interface down before processing

[sudo] password for sensei:  // here i have entered the root password so that privileges obtained to move on

sensei@sensei:~$ sudo ifconfig eth0 hw ether 1a:1a:1a:1a:1a:1a // here randomly i replaced  my new MAC

sensei@sensei:~$ sudo ifconfig eth0 up// the downed interface again is got up

sensei@sensei:~$ ifconfig// here i query again and i see it has been changed to new value entered as “1a:1a:……”

take care,best wishes