Is there an option to set a primary / secondary DNS?
I have a Pi-hole device and I set the router to use it. It works great, but when I had to take it down for some time, my PC’s had problems connecting the internet.
I wish that the Pi-hole will be used as DNS server all the time and have another DNS server that will be used only if the pi-hole is not working.
Currently I have my DNS set this way:
Network -> interfaces -> WAN -> Advanced Settings ->
Deselect “use DNS servers advertised by peer”
Use custom DNS servers = my Pi-hole IP.
How can I do this? Is there a way to know which DNS server is in use?
I saw that there is allot of information about the DNS in the user guide, but I have a very minimal knowledge about networking and could not make any sense of it.