[SOLVED] Wireguard- interfaces ping but can't get actual data through.

[JustAnotherUser]

So, I just went through 3 days of hell. I wanted to post my findings for others.

Installed Wireguard. Had it all working. A day or so after I got it working, it stopped working.

SYMPTOMS: Some sites ping fine but no actual data gets through. Some sites don't even ping.

FIX: Delete ALL old OpenVPN information. Yes, even the DISABLED stuff. Once I got rid of the old OpenVPN entries, it all started working fine.