Hello
The issue I am facing:
I'm having long response time (and timeouts) on DNS queries after a few days of runtime and want to try to duplicate my pi-hole install to alleviate the load (or even use it as main DNS server, see details for more info on the why).
I think there is an option to add a secondary DNS server but all info I can find are quite old, I've tried to add a file in /etc/dnsmasq.d/ and reload pihole-FTL but the DHCP doesn't seem to distribute the other DNS server (also there isn't any other file in this folder so I'm not sure if it's still in use ?). Is there an official documentation on how to do this?
$ cat /etc/dnsmasq.d/99-extra-dns.conf
dhcp-option=6,192.168.1.251,192.168.1.24
Details about my system:
OK so I have a semi-weird setup. My router doesn't support DNS customization so I use pi-hole as DHCP server on a Pi 2. I've tried to run pi-hole on a docker homelab I have on my network but for some reason I'm unable to have it do its DHCP job no matter what I try (even on host mode) so I felt back on the Pi 2 option because it just works. Problem is: I suspect it's quite a lot for this old machine and after a few days of uptime I have long DNS answer time and timeouts that forces me to reboot the Pi.
My solution was to have a docker pi-hole on my homelab as DNS server and use both the Pi 2 and docker as DNS server (or even just the docker one, the machine hosting it is much more powerful than the Pi 2), but I struggle to find where to setup this on pi-hole.
What I have changed since installing Pi-hole:
I have setup the DHCP server and also added a conf file in /etc/dnsmasq.d/ (as stated above) plus restarted pihole-FTL service.
Thanks a lot for your help in advance!
