“Bitcoin Core #22112 changes the assumed port for I2P addresses to be 0 instead of 8333 (which is the default for IPv4 and IPv6 addresses), and prevents connections to I2P addresses with ports other than 0. The SAM v3.1 specification (which is supported by Bitcoin Core), does not include the concept of ports. This restriction may be lifted if Bitcoin Core is updated to support SAM v3.2, which does include the concept of ports.”