RFC 3056

[francis . arts]

Hello,

When reading RFC 3056 (6 to 4 strategy), I have 2 questions I could not get answered. Consider the router that originates the IPv4 tunnel. Which IP address should this router use as the source IP addres in its IPv4 encapsulation header:

* Should this address be the router id of this router?
Or
* Should the source IPv4 address be derived from the source IPv6 address
Or
...?

Thanks for any help you can provide,

        Francis.