I have a weird behaviour.
I have a Shadowsocks-Server running for almost 2 years now. It runs on a Raspberry Pi that also has Pihole and Unbound installed.
I use the Shadowsocks app to connect to this server and everything was working fine until just now. I can still connect to the server when I am outside of my LAN, but when I am connected to the LAN (with Wifi) the connection no longer works. It says: Failed to detect internet connection: Unable to resolve host "www.google.com": No address associated with hostname
I am absolutely sure that this still worked a few days ago, as I often have the Shadowsocks connection turned on on my phone and when I come home, it just continued to work seamlessly.
But today I keep getting the error message whenever I try to connect. When I disable Wifi, I can perfectly connect with the mobile data.
I defined Remote DNS with the IP address of the Pihole (192.168.7.3), but somehow it seems it can’t connect to it when I’m in the LAN.
How can I troubleshoot this?