The following error appears when trying to perform a migration:
Error: launchpad error (Error code = 2): == STDERR ==================== Unable to start SSH session: Failed getting banner ==============================
Trying to connect to the server directly via SSH results in another error:
# ssh 18.104.22.168 ssh_exchange_identification: Connection closed by remote host
MaxStartups option is not enabled in
/etc/ssh/sshd_config or not enough connections.