SMC Networks SMC7004VBR V.2 - Manual (Page 29)

Advanced Setup
27
WAN
Specify the WAN connection type provided by your Internet
Service Provider, then click [More Configuration] to enter detailed
configuration parameters for the selected connection type.
•
[Dynamic IP]
The Host Name is optional, but it may be required by some
ISPs. The default MAC address is set to the WAN's physical
interface on the 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, connect only the PC with the registered MAC address
to the Barricade™ and click the [Clone MAC Address] button.
This will replace the current Barricade™ MAC address with
the already registered Ethernet card MAC address.
If you are unsure of which PC did the broadband technician
originally set up, call your ISP and request they register
a new MAC address for your account. Register using the
Barricade™'s MAC address.