Router changes MAC address automatically with every reboot

We need to add a new repository to /etc/ipkg.conf .

Login with ssh. Open the file with
vi /etc/ipkg.conf
press i
and paste
src florian http://openwrt.alphacore.net/

Press escape, :wq and enter.

Now install macchanger:
ipkg update
ipkg install macchanger

Copy the following init file to the router:
/etc/init.d/S41Macs
and make it executable:
chmod +x /etc/init.d/S41Macs

Let#S go on with installation and usage of airodump on the WRT54GL.