Someone can explain to me how to make a change of MAC in gateway-router Thomson TG 784 with firmware of september 2010 (I can log in as a root user)?
Thanks for your question caralhete.
Every router is unique in how to alter the MAC Address and some can not be altered. You can't really change it but often you can emulate a different MAC Address through a process called MAC Address Cloning.
Your TG784 is a DSL Modem/Router combo. Most of the combo units do not have MAC Cloning available because the Modem and Router share the same MAC Address.