I know there are a few here who are much more knowledgable about things like pi-hole, and I need help to solve a problem without going too far down a rabbit hole. I do have other things (TEA) I would rather be doing.
I noticed some strange things happening this week, including the return of ads. Pi-hole takes care of that, right?
Not when it is being bypassed.
I discovered my ISP had reset the modem/router unit in my home back to defaults.
As a result, the router was doing DHCP and the ISP was providing DNS. This is absolutely NOT what I wanted and was changed without my permission
![WTF? :wtf:](https://www.eevblog.com/forum/Smileys/default/wtf2.gif)
.
So I spent the morning fettling around with things and thought I had fixed it.
DHCP is once again turned OFF on the router, just the way it was when I set it up.
The Primary DNS once again points to my Pi-hole.
However, in my previous setup, the secondary DNS pointed to 0.0.0.0.
This time, I had to point the secondary DNS to my Pi-hole as well, in order for the router to accept the change in settings.
After that, I was happy. I could return to browsing eevblog.com
![Phew :phew:](https://www.eevblog.com/forum/Smileys/default/phew.gif)
and things like google (sans ads) worked.
However, SWMBO was the first to discover that all is not well in the world.
It turns out quite a number of things do not work, while others do. For example, Yahoo and Keysight could not be accessed.
The Query Log in Pi-hole is giving me some clues.
For the sites that are not working, the Status is
Unknown(0), whereas sites that are working have a
status OK(...)Does anyone have any experience with this sort of thing? It almost looks like there is something wrong with a DNS cache or an upstream DNS server.
Of course, I am starting to get out of my league at this point.
Google is a bit of a useless tease since I can get search results, but mostly cannot access the website that returned in the search result!
Any ideas?
![Scared :scared:](https://www.eevblog.com/forum/Smileys/default/scared.gif)