I've also registered a self-organized session titled "#dn42 / #Freifunk #multicast routing/peering workshop" for the #39c3: https://events.ccc.de/congress/2025/hub/en/event/detail/dn42freifunk-multicast-routingpeering-workshop
Let me know if you might be interested in joining :-).
[39c3] dn42/Freifunk multicast routing/peering workshop

Multicast allows to send information, for example audio or video streams, sensor data or service discovery messages, to many interested recipients with minimal overhead, without the need of a central, beefy server. A perfect fit with a decentral n...

39c3