What is the minimum number of nodes for a private I2P testnet ?

I do not know the absolute minimum, but I expect you should need ~10 nodes to have most operations function smoothly.

  • Still don't know the answer, kinda not trivial to quantify ;) The most basic functionality is a full roundtrip client-server-client. With 3 hops per tunnel (hard coded default), this requires 12 hops (different I2P nodes), so 14 nodes. In addition, 2 nodes can only communicate in a single direction. Destinations choose random nodes to build tunnels, the probability that these nodes that can communicate in the direction that the initiator desires (must not already have a transport session in the opposite direction) has to be non negligible ... – Moroccan Engineer Aug 18 at 14:17

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