Can't do multi-NIC DHCP w/ new version

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1

Pi-hole never implemented the ability to have DHCP on more than one NIC interface. Thankfully Pi-hole is based on dnsmasq I was able to enter custom setting in file(/etc/dnsmasq.d/99-custom-settings.conf) that dnsmasq would take under Pi-hole and Pi-hole wouldn't override. Even though I had to do that manually instead of the GUI, it still worked.
With the new version it looks like all dnsmasq files are consolidated into /etc/pihole/dnsmasq.conf that is auto-generated by Pi-hole, which overrides any manual settings.
If Pi-hole isn't interest in implementing multi-NIC DHCP, is there a way to still add manual/custom DHCP settings, especially for multi-NIC DHCP?

Environment:
VM - VMware ESXi
OS - Rocky-Linux 9.4
Warning messages:
DNSMASQ_WARN - no address range available for DHCP request via eth0
DNSMASQ_WARN - no address range available for DHCP request via eth1

Expected Behaviour:

(/etc/dnsmasq.d/99-custom-settings.conf)
dhcp-range=eth0,192.168.0.201,192.168.0.251,24h
dhcp-option=eth0,option:router,192.168.0.1
dhcp-range=eth1,192.168.1.201,192.168.1.251,24h
dhcp-option=eth1,option:router,192.168.1.1
dhcp-range=eth2,192.168.2.201,192.168.2.251,24h
dhcp-option=eth2,option:router,192.168.2.1

dhcp-option=eth0,option:ntp-server,192.168.0.11,192.168.0.12,192.168.0.13
dhcp-option=eth1,option:ntp-server,192.168.1.11,192.168.1.12,192.168.1.13
dhcp-option=eth2,option:ntp-server,192.168.2.11,192.168.2.12,192.168.2.13

Actual Behaviour:

(/etc/pihole/dnsmasq.conf)
dhcp-range=192.168.2.201,192.168.2.251,24h
dhcp-option=option:router,192.168.2.1

dhcp-option=option:ntp-server,0.0.0.0

2

This is the default setting, but you can change it. Open up your file /etc/pihole/pihole.toml and edit the following section so the option is set to true.

  # Should FTL load additional dnsmasq configuration files from /etc/dnsmasq.d/?
  etc_dnsmasq_d = true ### CHANGED, default = false

Then restart FTL with the following, and your custom dnsmasq files will be active again.

sudo service pihole-FTL restart

3

Thanks JFB, that did the trick. I guess I have some extra reading to do :slight_smile:

P.S. Any chance of Pi-hole adding support for multi-NIC DHCP and would love certificate local CA feature as well.

4

There are plenty of ways to set up a CA without pi-hole. That is beyond the scope of what pi-hole is, a DNS blocker.

5

There are plenty of ways to setup DNS and DHCP too.

6

You just completely ignored the second half of my reply, didn't you?

7

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