It's not clear that would make anyone happy. You might really want to track machines in your fleet, in a way that persists across reboots. Let's say you can ac

It's not clear that would make anyone happy. You might really want to track machines in your fleet, in a way that persists across reboots. Let's say you can access a machine remotely but you got all your ethernet cables tangled up, so you don't know which physical machine you SSHed into. Or if you are being concerned about being tracked by a third party, you don't want this identifier to exist at all, even if it doesn't persist through reboots. I agree there are other solutions in both cases.