so I show two under "IPv6 address(es) bound to the eth0 interface:". I see the fe80 like you mentioned as well as a fddb address. This should be reflected in the debug log.
So all that to say, what can/should I do to stop this practice of the pi-hole running these reverse DNS requests every hour?
I also have many Apple devices, but I have turned off "Private Address" for all of them.
You also recommended that I disable IPV6 when I asked about getting odd BOGUS results when DNSSEC is turned on (Getting BOGUS results only from specific domains - #2 by Coro). Apologies for not following up, but I ended up just turning off DNSSEC since turning off IPV6 on my router and Pi-Hole did not help.