Loose footnotes: bold-wrapped sup with trailing content

The protocol handles mobility transparently.1

Some care is needed to prevent session hijacking.2

There are several candidate protocols.3

In conclusion, the approach is promising.

1 Note 2024-01-15: This also works with legacy addressing and NAT traversal.

2 Note 2024-01-10: A simple challenge-response exchange during handshake is sufficient to prevent hijacking by outside attackers.

3 Note 2024-03-20: Besides the primary candidate, there are several other proposals with similar properties.

Update 2024-06-01: A follow-up discussion has been posted on the project blog.