Wireguard Always-On dies when behind OPNsense

[TheForumTroll]

Hello experts 

I have a quick question: I have WireGuard set to Always On, on some phones, but when they are on the local network on Wi-Fi inside OPNsense VPN stops working/can't connect. What is the correct way to fix this, so it isn't necessary to turn the VPN on and off? DNS override? NAT reflection? 

Thanks!

[Kinerg]

You need to create a NAT port forward rule for the WireGuard interface. See attached picture.