D-Link DIR-655 - Manual (Page 24)

 D-Link DIR-655 User Manual
Section  - Configuration
MTU:
Clone MAC
Address:
Maximum Transmission Unit - you may need to change the MTU for optimal performance with your specific ISP. 1400 is the
default MTU.
The default MAC Address is set to the Internet port’s physical interface MAC address on the Broadband Router. It is not
recommended that you change the default MAC address unless required by your ISP. You can use the
Clone Your PC’s
MAC Address button to replace the Internet port’s MAC address with the MAC address of your Ethernet card.