Tagged pi-hole
2 posts.
DNS lookups to the Pi-hole address succeeded, but its query log stayed empty. The answers came from the router, whose ad-block feature redirects every port-53 packet on the LAN to its own resolver. How I found out, and the one-line test that would have saved me the afternoon.
The backup command I was asked to schedule did nothing on the current version: it printed usage text, exited 0 and wrote no file. So the job now checks the file it produces and refuses to upload anything that is not a real archive.