[tor-relays] Unprompted HUPs

hi,

Checking the log of my relay, I see that sometimes it reloads its configuration from what it says is a HUP signal.

An example:

"06:40:57 [NOTICE] Received reload signal (hup). Reloading config and resetting internal state."

I don't understand, as I was asleep at that point and didn't interact with the relay or the server at all, I haven't set up anything to automatically issue a HUP.

Does Tor automatically trigger its own HUP every so often?

Thanks

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