Tenda V1200 User Manual page 60

Parameter description
Parameter
MAC Clone
MTU
Option 60 Vendor ID
Description
If you can only access the internet via a specified computer, it may indicate
that your ISP binds the internet service to the MAC address of the computer
to restrict access. In this case, you need to clone the MAC address of this
computer to the modem router for internet access.
It specifies the maximum size of packet that the router can transmit. MTU
varies across connection types.
It is used by the client to report its manufactory and configuration
information.
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