See perhaps recent session at IETF 124 (Montreal; Nov 2025) of the Delay/Disruption Tolerant Networking Working Group (DTN WG):

* https://www.youtube.com/watch?v=7hbZSwvXpZ4

* https://datatracker.ietf.org/group/dtn/about/

Various other sessions / meetings:

* https://www.ietf.org/meeting/124/

* https://www.youtube.com/playlist?list=PLC86T-6ZTP5hpTncHTKkY...