- remove the 'ring' parameter from dns_tsigkey_createfromkey(), and use dns_tsigkeyring_add() to add key objects to a keyring instead. - add a magic number to dns_tsigkeyring_t - change dns_tsigkeyring_dumpanddetach() to dns_tsigkeyring_dump(); we now call dns_tsigkeyring_detach() separately. - remove 'maxgenerated' from dns_tsigkeyring_t since it never changes.