When rebuilding my NAS set up, one essential service I needed to set up again was our Pi-hole instance. Rather than an ad blocker running on each and every device, this is essentially a network-wide advert blocker. Now, one issue I ran into was that it seemed to only be working for some devices. A useful resource to figure out whether it was working or not was this “Ad Blocker Test” - in the end, the good ol' “turn it off and on again” sorted out the last few recalcitrant devices…