I'm using a FritzBox Cable 6600 (Vodafone Germany branded) and like to achieve a mostly detached home network, which is capable of running even if my Cable-internet is broken.
So, in my mind, I have the following hardware at hand:
have FritzBox 6600 as internet router
I have a FritzMesh, including a FritzBox 6890 LTE
I have multiple Pis in the network, including the Pi-hole one
What I have already configured:
configured my FritzBox 6600 to use Pi-hole als DNS (for "normal" network, guest is unfortunately without Pi-hole, but that's ok)
configured my Pi-hole to use the Ubound installed on it and I'm my own DNS-provider so to say
configured my Pi-hole to also work as a DHCP server
So question:
how can I "fail-over" to my LTE FritzBox, if my Cable goes offline without having to do much?
I'm not into automatic fail-over, I'm fine with pulling a string or two to have my network going over to LTE internet
Is there some cool tips? or do you recommend a different approach?
Is this even posssible with Fritzbox? It would require changing the routes of the Internet connection and has nothing to do with Pi-hole as the DNS server isn't involved here.
You're completely right - this has nothing to do with Pi-hole. Best would probably to ask in a FritzBox forum or AVM directly. I'm not sure if FB do have a fail-over mechanism at all, and I highly doubt it will work across a mesh network.
I guess there is no simple solution to your problem. The only workaround I can come up wirh is some self-made solution where you have a central "router" with two upstream gateways (your FBs). In case the router detects a disconnect on one interface it can route all traffic to the other interface.
