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Pi hole should be acting as DNS server
Pinging Google from client laptop results in "Ping request could not find....". Connecting to web admin on Pi Hole works just fine though. I have tried the Pi Hole IP as my router DNS server and have now just limited it to changing the DNS setting on the laptop as my Internet access kept stopping throughout the house.
To set Pi Hole up, I used the following instructions : Block ads on your network with Raspberry Pi and pi-hole | Opensource.com