If your ISP doesn’t offer you the related parameters, 
you do not need to enter them. After configuring the 
settings correctly, click “Apply” button and wait for 60 
seconds. Then you can access the Internet.
6.3 MAC Address Clone
This page is for the Router’s MAC address to WAN.
Some ISPs require end-user's MAC address to access 
their network. This feature copies the MAC address of 
your network device to the Router.
 MAC Address: The MAC address to be registered 
with your Internet service provider.
 Clone   MAC   Address:  Register   your   PC's   MAC 
address.
 Restore Default MAC Address:  Restore to the 
default hardware MAC address.