D-Link DIR-412 User Manual page 24

Section 3 - Configuration
Select the type of Internet connection you will use
on your WAN connection. If using the DIR-412 for
the first time, leave the Skip 3G Configuration
box unchecked. Check the Skip 3G Configuration
box if you do not want to configure the router's 3G
connection.
Click Next to continue.
If you selected Dynamic IP Address, you may need
to enter the MAC address of the computer that was
last connected directly to your modem. If you are
currently using that computer, click Copy Your PC's
MAC Address and then click Next to continue.
The Host Name is optional but may be required by
some ISPs. The default host name is "DIR-412".
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