Hello,
Recently I have installed adguard and had to disable unbound. Unfortunately, I have not been able both get work in harmony. adguard is acting as sole dns server. Everything seemed normal after those changes.
I wanted install a vpn server in opnsense box. Because of that I changed the cable modem operating mode to bridge which was operating in router mode. Everything seemed working normal, I realized packaged updates, check are failing. I thought that it was a mirror problem, change several mirrors with the same result.
I do not certainly know that it is because of initial misconfiguration of adguard or modem bridge mode change. I have not changed any setting in the wan part.
I really appreciate any insight.
What did your network look like previously and what does it look like now? Where is adguard running and how do you have it configured? What do your System->Settings->General->Networking look like?