Exactly. If there’s benefit in checking that everything is configured correctly, and software bugs, hardware bugs and cosmic rays cause things to enter a miscon

Exactly. If there’s benefit in checking that everything is configured correctly, and software bugs, hardware bugs and cosmic rays cause things to enter a misconfigured state, then maybe it’s worth periodically validating the internal state at runtime? The earlier errors are detected, the less damage they can cause and the easier they are to debug. Also when errors are detected, I imagine soft-reboots of that hardware or kernel module would usually be better for the user than hard reboots of the entire system. Mind you, a once in a blue moon reboot of the network interface might cause more problems in a web application than a reboot of the entire machine.