Fixed it!
Turns out my my provider AirVPN uses "explicit-exit-notify 5" in their configuration and that doesn't play well with Merlin. So when I removed that option from the config everything seems to work perfectly.
Of course, this doesn't make any sense and it seems like a bug because...
Hi...
I have one client PC (IP: 10.0.0.11) using the router (IP: 10.0.0.1) and I want to force it to use VPN or have no internet access otherwise. The problem is that client can still access the internet when the tunnel is down! It is like the settings have no effect at all!
I searched and...