DIR-620S  Wireless N300 Router with 3G/LTE Support and
USB Port
User Manual
Configuring via Web-based Interface
Figure 74. The page for creating a new PPPoE connection. The Ethernet section.
Parameter Description
Ethernet
MAC address
A   MAC   address   assigned   to   the   interface.   This   parameter   is 
mandatory if your ISP uses MAC address binding. In the field, enter 
the   MAC   address   registered   by   your   ISP   upon   concluding   the 
agreement.
To   set   the   MAC   address   of   the   network   interface   card   (of   the 
computer that is being used to configure the router at the moment) 
as the MAC address of the WAN interface, move the Clone MAC 
address of  your NIC  switch  to  the  right.  When  the switch is 
moved to the right, the field is unavailable for editing.
To set the router's MAC address, click the RESTORE DEFAULT 
MAC ADDRESS button (the button is available when the switch is 
moved to the right).
MTU
The maximum size of units transmitted by the interface.
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