SMC Networks Barricade SMCWBR14-G - Manual (Page 55)

Advanced Setup
43
Dynamic IP
The Host Name is optional, but may be required by some ISPs.
The default MAC address is set to the WAN’s physical interface
on the Wireless Barricade. Use this address when registering for
Internet service, and do not change it unless required by your
ISP. If your ISP used the MAC address of an Ethernet card as an
identifier when first setting up your broadband account, only
connect the PC with the registered MAC address to the Wireless
Barricade and click the Clone MAC Address button. This will
replace the current Wireless Barricade MAC address with the
already registered Ethernet card MAC address. If you are unsure
of which PC was originally set up by the broadband technician,
call your ISP and request that they register a new MAC address
for your account. Register the default MAC address of the
Wireless Barricade.