2 piholes 1 network?

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1

The issue I am facing:

I would like to be able to have a 2nd pihole on my home network but when I set the router to advertise both piholes, devices on the network are not able to connect. Everything works fine with just one pihole.

I am not expecting load balancing or anything like that, just want to be able to offer a 2nd pihole as an option to devices.

Details about my system:

currently have a raspberry pi 3b as the main pihole and would like to add a pi zero w as a 2nd pihole both using raspberry pi os lite. They are both setup to use cloudflared for DoH.

Router: NanoPi R4S using openwrt version OpenWrt 24.10.1

2x APs: ZyXEL NWA50AX Pro using version OpenWrt 24.10.1

Switch: HPE 1920-24G using version OpenWrt 24.10.1

2

Not sure this will help, but I can confirm 2 Pi-holes on a single network does work.
I'm running multiple subnets and using port forwarding rules to allow the other subnets to request DNS.

You can also set a secondary DNS on the devices (not ideal but works if your router isn't playing.)

I think your query might sit with the OpenWRT forum rather than this one?

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3

I figured it out I did not correctly configure /etc/hosts on the piholes, which was causing the issue.

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