Privacy and Decentralisation with Multicast
summary
Argues that IP multicast is the missing piece for decentralisation and privacy, demonstrating concrete tools and tricks: IPv6 multicast with MLD/IGMP snooping, PIM/Sparse modes and SSM, transitional tunnelling via RFC 7450, and the lightweight Librecast library for apps. Shows working examples: a federated chat that needs no server-side federation, file-based IoT firmware delivery using chunked datagrams + checksums + FEC able to update a billion IOT nodes with one tiny virtual server, and using the 112-bit group space for address design. Kernel routing gaps and reliability strategies are discussed.
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chapters (14)
- 0:00Start
- 4:39Definition
- 5:49What is Multicast?
- 6:34Multicast Misconceptions
- 16:55Multicast Routing
- 18:48Single Source Multicast (SSM)
- 24:02Multicast Applications
- 27:33Anatomy of an IPv6 Multicast Address
- 28:20Chat Server
- 32:59Datagram
- 34:44Flow Control
- 35:31Reliability
- 36:23WebRTC Simulcasting
- 38:37HTTP over multicast QUIC
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