Pro Pioneer - Spin Down working or not ?

Yes, I've checked many times for ANY logs with any indication of what is going on: nada. It's been suggested - multiple times - that the device is spinning up out of sleep mode simply to write to logs. Despite my asking, no one has ever suggested what a sleeping device could possibly want to write to a log file, and this answer is unacceptable to me. I just did a port translation on my router this evening to try to stop SSH attacks on the default port 22, but that still does not account for all the wake cycles.

Time synchro does account for some wakes, but not most of them. I've submitted an enhancement request suggesting a configurable synchronization period since 4 hours is completely unnecessary.