Router Family

Background

A router family shares a private key to verify authenticity.

According to the documentation, The Router Family feature of I2P provides users (particularly researchers) who run multiple routers with the means to publicly identify those routers. It serves as a means to identify and give privilege to these groups of routers as to blacklist an attacker label. It also will prevent other routers from including multiple routers of the family in a single tunnel, which could lead to deanonymization. Routers that appear to be colluding but do not have a declared family may be assumed to be an attack on the network, and may be blocked.