Pi-hole: How do I force the WLAN IP address to 192.168.42.1 after installation?

General Discussion
1

Hello,

I installed Pi-hole and Hotspot on my Raspberry Pi 4. The static IP address on the network is 192.168.1.100.

But to access the Raspberry Pi without going through the network, I installed Hotspot, which has the IP address 192.168.42.1 on the WLAN.

When I installed Pi-hole, it configured the static IP address 192.168.1.100 instead of the one I want for the Hotspot, 192.168.42.1.

How can I change the Pi-hole settings to force the Hotspot to use the IP address 192.168.42.1? Thank you for your help.

Laurent

--------info--------

dietpi@DietPi:~$ ip a show wlan0
inet 192.168.42.1/24 brd 192.168.42.255 scope global wlan0

DietPi v10.3.3

  • Device model : RPi 4 Model B (aarch64)
  • LAN IP : 192.168.1.100 (eth0)
  • MOTD : Debian 13 Trixie
  • dietpi@DietPi:~$ uname --all
    Linux DietPi 6.12.75+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.75-1+rpt1~bookworm (2026-03-11) aarch64 GNU/Linux
  • Architecture | arm64

2

Simply go into PiHole settings and set PiHole to accept requests on all interfaces.

3

How do I do this?

Can it be done through the web interface at http://192.168.1.100:8089/admin/settings/all?

And in which Pi-hole settings menu?

4

By default the pihole WebUI listens on all interfaces, I think Joulinar was talking about the interface for receiving DNS requests.
So the webUI should be available via both IPs, 1.100 via Ethernet and 42.1 via wifi.