WebUI not available

[dvlad]

Hello everyone,

I recently purchased a raspberry pi 5 and wanted to install pi-hole to block advertisements on my network.
I followed the official documentation and tried to install it with the command provided in the documentation - curl -sSL https://install.pi-hole.net | bash.
The installation was successful, however, when trying to access the admin page to configure my pi-hole, I observed that the website could not be accessed.

This site can’t be reached

http://192.168.2.100/admin is unreachable.
ERR_ADDRESS_UNREACHABLE

I did some networking checks on the OS, and saw that the ports are open and nothing is blocking connectivity.
I checked for other people having the same issue, and followed some troubleshooting steps:

• pihole -r - did not find any issues
• pihole status reported everything is fine.
• telnet to 192.168.2.100 (pi ip address) on port 80 is successful.
• iptables -L was clear.
  I even installed docker and tried running pi-hole in a docker container, with a separate ip address allocated for the container, but the behaviour was the same.

Any support would be highly appreciated! I will buy you a beer

Expected Behaviour:

Access web ui for configuration.

Actual Behaviour:

Web UI is not available

Debug Token:

My debug token is - https://tricorder.pi-hole.net/U6SJMl8v/
I cannot even think how would I go further to install unbound and wire guard if I am unable to even install pi-hole

[Bucking_Horn]

@dvlad

ERR_ADDRESS_UNREACHABLE

This suggests a networking issue, e.g. you'd see that message if the device at 192.168.2.100 would be down, or perhaps if port 80 were blocked on the device.

In your case, a successful telnet to 192.168.2.100:80 would rule out a firewall issue, and the device (your Pi-hole machine) isn't down either, suggesting that the offending client may be on a different subnet.

For the client machine that produces that error, please share its IPv4 address.

[dvlad]

Hi Bucking_Horn ,

Thank you for your kind and swift response!
I have flashed a new OS install on the PI and proceeded to reinstall pi-hole with the command in the official documentation and this time choose a different Windows client to connect from, and I can successfully connect to the admin webpage.
The issue seems to be related to my macbook pro client, which cannot open the page with either Chrome or Brave, but does so with Safari.
It's a strange behavior and I will need to do some research why this is happening.
For the time being the problem is solved, as I use my Windows clients to access the webpage.
I appreciate your response, and thank you for your input!
Have a great day!
Daniel