destination address
Click on the red underlined text to get to the source
... IPv6 packet takes.
The source and destination addresses of the IPv6 packets traversing
the tunnel ...
... source
addresses coming from a well-known prefix, whereas the destination
addresses could be any nodes on the Internet.
...
... 2. In router-to-router tunnels, the source and destination addresses
of the traffic could come from a wide range ...