thelounge may publicly disclose of all usernames/idents via port 113
Per RFC 1413, The unique identifying tuple includes not only the ports, but also the both addresses. Without the addresses, the information becomes both non-unique and public: If multiple connections happen to use the same local port number (which is possible if the addresses differ), the username of the first is returned for all, resulting in the wrong ident for all but the first. By not checking the connection address, …