Thread: Spoof MAC Address.

One common reason to want to do this is that some cable internet providers MAC-lock the cable modem to your NIC's MAC when they come on site for installation. If you change your NIC, the modem will no longer allow it to connect.

As far as ARP poisoning, you do not need to change your hardware MAC to achieve it, but I am not going into any further detail than that.

What is EEPROM?

Its rewritable memory like flash memory; unlike memory thats burnt into a chip and can't be modified.

That shouldent matter tho as nowadays MAC addresses tend to be set in software rather burnt into the NIC.