Pi-hole disconnects after few minuts

[browncracker]

Please follow the below template, it will help us to help you!

Expected Behaviour:

Pi-hole should be blocking ads while plugged in and set to primary DNS on router

Actual Behaviour:

Expected behaviour occurs for ~15 minutes, then DNS server switches to secondary and Pi-hole does not work any longer

Debug Token:

rtd49vppvm

Thank you for your help.

[DanSchaper]

Is this similar to the question asked by another user?

Primary vs. Secondary DNS

Hi, small question: I have set OpenDNS as primary DNS and Google (8.8.4.4.) as the secondary one in PiHole. I always thought that the secondary DNS is a fall-back solution; only used in case the primary DNS fails. However, looking at the admin page it seems that the Pi is simply using both at the same time. The primary DNS gets about 60% of the queries and the other 40% go to the secondary one. Why is this? Now I'm wondering if my Router, which has a secondary DNS set in case my Pi goes down,…

[DanSchaper]

Also see this topic:

Why should Pi-hole be my only DNS server?

Reduced Ad Blocking Capability The main reason you should Pi-hole as your only DNS server is that you will see increased performance in the blocking of ads. If you have two DNS servers (Pi-hole and something else), your network clients may not always query Pi-hole for name resolution. If a query happens to be answered from a non-Pi-hole DNS server, your block lists will not apply (since that DNS server doesn't know about them). All Queries Need To Go Through Pi-hole First Since other DNS serv…