Hi everyone,
I'm new to Pi-hole and recently decided to set it up on one of my Raspberry Pis. Since I have two Raspberry Pis running, I figured I might as well use one for Pi-hole, which I did. I set it as my primary DNS, tested it, and confirmed that it was blocking a lot of ads. However, when I tested it using this ad test, I noticed that some ads still appeared (I had disabled my browser’s ad blocker).
To troubleshoot, I ran ipconfig /all on my terminal and found that my PC was using my router’s gateway as a secondary DNS, even though the secondary DNS field is empty in my router settings. I then tried setting my Pi-hole as both the primary and secondary DNS, but when I did that, I lost internet access for some reason.
To work around this, I installed a second Pi-hole instance on my other Raspberry Pi and set it as my secondary DNS. However, that also caused me to lose internet access. The only way I can maintain connectivity is by either leaving the secondary DNS field empty or setting it to a public DNS server.
I even tested this behavior on a different router (ZTE F6600) and encountered the same issue! Am I missing something in my setup?
Thanks in advance for any help!