Don't get any internet access when connected to Pi-hole

Help
1

Hi, I've got Pi-Hole setup on my Raspberry Pi3, have had for ages, but recently its stopped working properly (it may have been when I upgraded to 5.1). This morning I noticed that ad's were not being blocked, and then all access to the internet stopped.

When I put the Pi-Hole DNS into my eero router, everything on my network stops connecting to the internet, when I put it back to my ISP DNS, everything works fine.

I really can't figure out what's going on?

Any ideas?

I'll input some data below.

Expected Behaviour:

Pi-Hole blocks ads and allows access to the internet.
RaspberryPi3

Actual Behaviour:

No access to internet network wide when eero connected to Pi-Hole DNS.

Debug Token:

awvue55tar

3

From a client that you believe should be connected to the Pi-Hole for DNS, from the command prompt or terminal on that client (and not via ssh or Putty to the Pi), what is the output of

nslookup pi.hole

nslookup pi.hole 192.168.4.56

4

I’m on ISP DNS at the moment as I needed working Wi-fi. I’ll try it when I’m next tinkering with it.

Presumably terminal on macOS is ok, as long as I’m connected to my Wi-fi?

5

Yes, terminal on Mac is fine.

6

Ok, I've just managed to set my DNS to PiHole and run the commands:

nslookup pi.hole
Server: 192.168.4.1
Address: 192.168.4.1#53

Non-authoritative answer:
Name: pi.hole
Address: 192.168.4.56

nslookup pi.hole 192.168.4.56
Server: 192.168.4.56
Address: 192.168.4.56#53

Name: pi.hole
Address: 192.168.4.56

For some reason my iPhone could access the internet fine, but my Mac (where I ran the above commands) and other wifi (including SkyQ box) connected devices couldn't access the internet.

Thanks

7

Any ideas? Would it be worth wiping my sd card and starting fresh? I’ve got homebridge running on the same pi, so would rather not if I can help it?

8

Ok, I’ve fully reinstalled pi-hole from scratch. Still same result?

Any other ideas?

9

Read the docs for more info:

Specifically the "Post-install" bit to have your router properly configured to distribute Pi-hole's IP address through DHCP to the clients as the only DNS server:

10

I’ve done that and it’s worked well for ages! But now only some of my devices seem to get internet access while using the pihole dns on my eero.

I’m thinking it may actually be my eero that’s causing the issue.

11

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