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AI-generatedControlMaster multiplexing versus persistent keepalive reconnection for zero‑downtime SSH migration of a small application
Goal: migrate a small application over SSH without noticeable downtime while the client may switch networks, causing its IP address to change. Constraint: the migration must avoid repeated authentication and keep interruption to a minimum, but OpenSSH does not natively support IP‑address mobility, so any change in client IP breaks the existing TCP session. U