Tenda A5s User Manual page 29

Configure device's WAN MAC address (Optional).
Normally you don't need to change device's default
WAN MAC address. However, some ISPs may bind client PC's
MAC address for Internet connection authentication. In this
case, simply enter the bound MAC in the WAN MAC Address
field or click "Copy My PC's MAC" to populate the field
automatically. (Config above settings using the PC whose
MAC address is bound with your ISP.)
WAN MAC Address: Config Device's WAN MAC address.
Copy My PC's MAC: Click to copy your PC's MAC address to
device's WAN MAC address field.
Restore to Factory Default MAC: Reset Device's WAN MAC to
factory default.
After device reboot, go to Status to check the WAN (Internet)
connection status. If you see below info there, congratulations, you
can enjoy surfing now.
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