TP-Link TD-W9970 User Manual page 86

Chapter 13 Specify Your Network Settings
Note:
If there is no available WAN connection to choose, make sure you have connected to the internet and the connection
type is not Bridge.
Done!
Now you can visit the IPv6 websites with the 6rd tunnel.
Tips:
The way to set up DS-Lite tunnel is similar to that of 6rd tunnel. If you are provided with an IPv6-only WAN connection
and have signed up for DS-Lite tunnel service, specify the DS-Lite tunnel by referring to the steps above.
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