Tenda AC1200 User Manual page 91

Wireless AC1200 ADSL2+ Dual Band Modem Router

Select the ETH interface you added just now from the pull-down menu in the figure below. Click Next.

Select PPP over Ethernet (PPPoE). Edit the Enter Service Description field which is optional. Suggest you keep
the default. Select a network protocol: IPv4 Only. Click Next.
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