I have pi-hole running on a Pi 3 B+. Within my network, I am able to video call from my Android device using Google Duo.
If I connect remotely using OpenVPN or WireGuard however, Google Duo rings but never connects the call. I don’t think it’s the pi-hole blocking anything, as it works from within the network… but I wasn’t sure where else to turn, since both VPNs I’ve tried result in the same issue.
Calling works just fine when either VPN is disconnected. Everything else works fine on the VPN.