Tenda AC1200 User Manual page 34

Wireless AC1200 ADSL2+ Dual Band Modem Router
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Configure PPP Username and Password and other settings on the figure below. Each field with its indication is
mentioned above in PPPoE and IPv4 users section.
If ISP provides you no static IPv6 address, you just keep the default settings DHCP mode.
Check Launch Dhcp6c for Prefix Delegation (IAPD).
If your ISP is using stateful DHCPv6, check Launch Dhcp6c for Address Assignment (IANA) also. Click Next.
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