Pi hole: How to set the DNS server back to the router?

Question

There are plenty tutorials how to set up the pi-hole as a DNS server. But I cant find any how to do the reverse.

I set up a pi hole as a DNS server and configured in my router to sent all traffic through it. Now I have troubles with mi pi-hole and I want to set the DNS back to my router.

I am pretty new to networking and I have the fear to screw up my entire network doing something wrong. What are the step to do, where I need to have attention, how to figure out what ip adress I need to write in router?

Answer 1

If you want to go back to the previous settings, you'll have to restore the router settings that you have changed. Somewhere in your router there should be an option to set the DNS servers, you will have to find that. In my router, I have set the DNS server addresses to my two Raspberry Pi Zero's with PiHole on it. If I don't want that anymore, I set the DNS option in my router back to the recommended option:

Besides that, it is best practice to have at least two DNS servers in your network for failover. If you have one DNS server and it breaks, your whole network breaks. And if you're unlucky, Raspberry Pi's running from an SD card tend to break a few times a year ...