I have a Pi-Hole w/ unbound upstream, and the pi-hole is set to conditionally forward requests to *.fritz.box to 192.168.178.1, but should not forward it outsid

I have a Pi-Hole w/ unbound upstream, and the pi-hole is set to conditionally forward requests to *.fritz.box to 192.168.178.1, but should not forward it outside (i.e. to unbound). Quote: "You can also specify a local domain name (like fritz.box) to ensure queries to devices ending in your local domain name will not leave your network, however, this is optional." This is in the Conditional Forwarding section to the Pi-Hole, so I assume it's OK.