The client cannot verify the server's host key, for example because the key is not present in the client's known-hosts store or does not match the stored key.
Numeric value: 9
SSH_DISCONNECT_HOST_KEY_NOT_VERIFIABLE
ssh The client cannot verify the server's host key, for example because the key is not present in the client's known-hosts store or does not match the stored key.
Numeric value: 9