The issue I am facing: I’m trying to switch DHCP from a Virgin Media Hub 3.0 to Pi-hole on a Raspberry Pi. DNS via Pi-hole works normally. When I turn off DHCP on the Virgin Hub, devices start sending DHCPDISCOVER packets and Pi-hole responds with DHCPOFFER, but the devices still fail to get an IP …

[image] deHakkelaar: They switched from dhcpcd to network-manager with Debian 12 (Bookwork) and up. You can check with below two which one is enabled on your Pi: systemctl is-enabled dhcpcd.service systemctl is-enabled NetworkManager.service If its Network Manager, you can configure "manual"…

[image] Steve5: DNS in Pi-hole set to listen on 127.0.0.1 I'm assuming this is probably a typo, but your Pi-hole from the other settings you describe should be set to listen on 192.168.0.2, not 127.0.0.1.

Thanks for the heads up, and apologies for the slow reply. The 127.0.0.1 setting is intentional - Pi-hole is using its local resolver, and DNS works fine when devices still have leases from the Virgin Hub. The issue only appears when DHCP is switched over. Clients get leases from Pi-hole and show u…

When using a static IP on the SH3, it sometimes doesn’t route properly or activate NAT for that device. I’ve found this with DHCP on, and using a static IP outside of the reserved range. So you might be running into the same issue even with DHCP off - although it would make me laugh in despair at th…

[image] Steve5: Raspberry Pi running Raspberry Pi OS Pi-hole at 192.168.0.2 (static IP set in /etc/dhcpcd.conf) What OS release? lsb_release -d

[image] deHakkelaar: lsb_release -d Hi, thanks for the reply, and apologies for taking so long to get back. It’s Debian GNU/Linux 13 (trixie). Thanks

Hi, thanks for your reply, sorry for taking so long to get back. I think the modem mode is the way forward, cheers.

[image] Steve5: Thanks for the heads up, and apologies for the slow reply. The 127.0.0.1 setting is intentional - Pi-hole is using its local resolver, and DNS works fine when devices still have leases from the Virgin Hub. Assuming I am reading this correctly, you’ve got the Pi-hole host syste…

[image] Steve5: It’s Debian GNU/Linux 13 (trixie). They switched from dhcpcd to network-manager with Debian 12 (Bookwork) and up. You can check with below two which one is enabled on your Pi: systemctl is-enabled dhcpcd.service systemctl is-enabled NetworkManager.service If its Network Ma…