With SSH2, Kex ecdh-sha2-nistp384 is not being supported.

SSH handshake failed: Error { code: Session(-5), msg: "Unable to exchange encryption keys" }

sess.method_pref(ssh2::MethodType::Kex, "ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521") -> Error: Error { code: Session(-33), msg: "The requested
method(s) are not currently supported" }

We tried enabling this key algorithm using macro to enable libssh2_ecdsa. Still its not working.
This Kex support is highly needed from SSH2 crate. If this is a bug, please provide and update with fix.
If its intentionally not supported, it would be great if you can provide the support.