FINDING · EVALUATION
A blocking rate of more than 70% of I2P peer IP addresses is sufficient to cause significant latency in web browsing activities, while blocking more than 90% of peer IP addresses can make the I2P network unusable. The cost to reach the 95% blocking threshold is operating only 10 censor-controlled routers.
From 2018-hoang-empirical — An Empirical Study of the I2P Anonymity Network and its Censorship Resistance · Abstract · 2018 · Internet Measurement Conference
Implications
- Network usability collapses well before full enumeration is achieved (70% = significant degradation, 90% = unusable), so resilience requires that enough peers remain unblockable — not that the full set survives; prioritize a hard-to-enumerate unlisted-relay tier.
- Design for graceful degradation: ensure clients can continue operating at reduced peer-set sizes by pre-caching multiple alternative entry points obtained through out-of-band channels before the blocking event occurs.
Tags
Extracted by claude-sonnet-4-6 — review before relying.