Make a network change reversible

A useful change record describes a result, not just a command.

Write down the expected difference

Describe the user-visible problem and the observation that would demonstrate an improvement. A service that starts successfully may still be unreachable from the network that matters. Acceptance should follow the complete request path.

Keep the previous state

Save configuration, versions and the information needed to recover access. A backup becomes useful when it has been checked. Keep an independent administrative path available while changing a remote system.

Define the return condition

Decide in advance when to stop and restore the previous configuration. Avoid combining unrelated routing, application and storage changes in one maintenance window; their failure modes can obscure each other.

Observe the change after restart

Configuration on disk and a process in memory can diverge. Check a fresh connection and the startup behaviour after a planned restart. The record should distinguish a completed check from a follow-up that is still pending.