Good memories. In 1994, about 5 years later after Steve Deering published RFC1112, IP multicast got implemented in our Dutch spanned amateur packet radio networ

Good memories. In 1994, about 5 years later after Steve Deering published RFC1112, IP multicast got implemented in our Dutch spanned amateur packet radio network [1]. There were about 20-30 network nodes acting as Local Access Points for access to users, and interconnected via interlinks. The nodes implemented the AX25 packet radio protocol with rates of 1200-9600 baud, on top of that you could transport IP datagrams hence these nodes were part of the 44.0.0.0 AMPR.ORG Internet network. There were nodes that had an Internet gateway through a local origanisation or university, but these gateways were mainly used to support linking the subnet of the 44.0.0.0 network and connecting the AX25 networks (via AXIP and wormholes). The nodes here in the Netherlands used the multicast to distribute link information and IP autorouting. It was very well possible to join a multicast group somehwere in the network by multiple parties, and then stream UDP frames accross the network. A very fun experiment at the time was to send CELP-compressed (1-2kb/s) audio packets through the multicast network, and hence it was possible to have conversation with multiple people spanning a distance larger then the radio horizon. The latency and packet loss were disrupting good operation, but it more or less worked. [1] https://www.jj1wtk.jp/nos/history.html https://www.jj1wtk.jp/nos/history.html