WireGuard and GL-AXT1800 (Two WireGuard connections at the same time)

[alzhao]

@TSK7MDE

I think the GUI should be revised and allow more than one tunnel from each instance in Route Mode with Customize Routing Rules (WG, OpenVPN).

This was on the dev schedule actually. Just too big change in firmware 4.x and have to make everthing work correct now before adding more features.