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Expected Behaviour:
I had this Rasperry Pi-hole running OK for about two weeks and I was watching the web interface every day, it seemed to run fine. It does block most ads.
Actual Behaviour:
At some point I was no longer able to log in remotely (VNC or SSH) and when I hooked it up to TV, there was no signal. I suspect it had crashed. The only way to recover was to reboot it.
Now it seems to work again, but the graph looks different, and there is a device with activity every hour. Most hits seem to be from a tivo domain, look at the token below and at this screenshot
What is happening here? the Pi seems to block fewer domains, but I still don't see ads. You can see the gap where the Pi has crashed, and before that and after that there is that strange periodic activity every hour.
EDIT: forgot to mention, but tivoservice.com generates a lot of hits for some reason.
These PTR requests are normal. Pi-hole does them once an hour for all known IP addresses (internal devices + external upstream DNS providers) to check whether a host name has changed and needs to be updated.
Thanks. Interesting that it didn't do those before. I wonder what changed? You asked how the dashboard looks like. Here it is. The Pi is plougged directly into the router so all devices should use that as DNS.
I expect a LOT of clients, right now I have 18 on WiFi (various laptops, phones, tablets, watches, thermostats, IoT, etc) and probably another 5-6 wired. Here is what I got with those commands (my Pi IP is 10.0.1.101, not sure if I should change the commends or not, I just used as you told me). Since I can only post 5 links (I am a new used), I will try to edit the links
I don't think the problem lies in your Pi-Hole. Your debug log shows that Pi-Hole is properly processing received DNS entries. What appears to have happened is that some of the clients are no longer using Pi-Hole (as evidenced from your screen shot from the long term database showing a step traffic change a few days ago). Did you update your router or anything else about that time?
I would test with one of your laptops by manually assigning its DNS to Pi-Hole. If the device connects to Pi-Hole for DNS, then you likely have a router configuration problem.
Edit - what is client 10.0.1.11? That seems to have some activity on the Pi-Hole? Is this a TIVO device?
Hi, I may have found the issue. Or at least one issue.
At some point I had issues with the router (Apple Airport Extreme about 10 year old) and I decided to resset and re-enter all settings. I think I made a typo and for the DNS IP I put 100.0.1.101 but my Pi-hole is 10.0.1.101
So that means the router was using the backup DNS server ( and Open-DNS) but for some strange reason my router still blocked almost all ads during this time. That is really interesting.
Interesting. I think I read somewhere that you need a backup DNS. What happens if the Pi crashed or lost power, all network is down without a DNS? Thanks