Tried connecting to MySQL 5.6.10a RDS Aurora cluster with username/password and SSL enabled, much as I'm able to do with other clients, but handshake fails with

Tried connecting to MySQL 5.6.10a RDS Aurora cluster with username/password and SSL enabled, much as I'm able to do with other clients, but handshake fails with `140230041270248:error:100000f0:SSL routines:OPENSSL_internal:UNSUPPORTED_PROTOCOL:../../third_party/boringssl/src/ssl/handshake_client.cc:568` Maybe boringssl is too new for my version of mysql supported tls protocol versions?