Pi-hole blocking internet traffic

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1

Expected Behaviour:

When editing DNS forwardings on my router, it should block ads on my network. I'm using a TP-Link A7 AC1750 flashed with OpenWRT 19.07.5

Actual Behaviour:

When I replace the DNS with my Pi's IP, it kills all internet traffic on my router. Whats strange, and why I think its possible its my router, is that when I manually set my iPhone's DNS to the Pi's IP, everything works mostly as expected. I have tried googling/ checking the forums but I haven't found anything so far that has helped.

Debug Token:

https://tricorder.pi-hole.net/h7gvwuy591

2

It seems like your Pi has connectivity issues

192.168.2.1
   * Pinging 192.168.2.1
192.168.2.1...
[✗] Gateway did not respond.

Do you block Port 53 on your network?

[✗] Failed to resolve doubleclick.com via a remote, public DNS server (8.8.8.8)

Your router advertises itself via DHCP as DNS server on eth0 and wlan0


*** [ DIAGNOSING ]: Discovering active DHCP servers (takes 10 seconds)
   Scanning all your interfaces for DHCP servers
   Timeout: 10 seconds
   
   * Received 300 bytes from eth0:192.168.2.1
     Offered IP address: 192.168.2.127
     Server IP address: 192.168.2.1
     Relay-agent IP address: N/A
     BOOTP server: (empty)
     BOOTP file: (empty)
     DHCP options:
      Message type: DHCPOFFER (2)
      server-identifier: 192.168.2.1
      lease-time: 120 ( 2m )
      renewal-time: 60 ( 1m )
      rebinding-time: 105 ( 1m 45s )
      netmask: 255.255.255.0
      broadcast: 192.168.2.255
      router: 192.168.2.1
      dns-server: 192.168.2.1

   * Received 310 bytes from wlan0:192.168.2.1
     Offered IP address: 192.168.2.128
     Server IP address: 192.168.2.1
     Relay-agent IP address: N/A
     BOOTP server: (empty)
     BOOTP file: (empty)
     DHCP options:
      Message type: DHCPOFFER (2)
      server-identifier: 192.168.2.1
      lease-time: 120 ( 2m )
      renewal-time: 60 ( 1m )
      rebinding-time: 105 ( 1m 45s )
      netmask: 255.255.255.0
      broadcast: 192.168.2.255
      router: 192.168.2.1
      dns-server: 192.168.2.1
      domain-name: "lan"
      hostname: "raspberrypi"
      --- end of options ---

What's the output of

echo ">top-clients >quit" | nc localhost 4711
3

It was indeed the router. Port 53 was being used for an older DNS project I had. I turned it off and it worked great.

4

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