The original post: /r/pihole by /u/Tritonal1 on 2024-09-26 15:14:03.

I have two piholes on two separate pi4s setup for fail over but for a long while now they both regularly lose Internet. Sometimes I can just restart DNS on them and they are back up but most of the time I have to fully power off and back on both devices. To troubleshoot some more I installed pihole on my Ubuntu server and things worked for about a week and now it’s doing the same thing. Restarting DNS works good so far though. When the Internet goes down things like my Google home minis will still work and I’m able to remotely ssh but accessing sites directly won’t.

Each are running Pi-hole v5.18.3

FTL v5.25.2

Web Interface v5.21