@brookheather said in WireGuard Package documentation:
Then you need to assign this interface a static IPv4 address range (your peers will be using an IP within this range).
I registered just to post here. This was it. This fixed my WireGuard issue. I could get connections and handshakes to the tunnel, but I couldn't get LAN or WAN access.
I do not remember if I had the configured in 2.5.1 or not, but since the change to 2.5.2 I couldn't get the WG tunnel to pass traffic. I didn't even need to create a gateway for the tunnel as mentioned above.
Adding the IP address fixed it all. Thank you!