Hi,
I am using a GL.Inet AXT-1800 running OpenWrt 21.02-SNAPSHOT r16399+165-c67509efd7 / LuCI luci-app-ddns branch git-21.284.67084-e4d24f0.
As you may know, GL.Inet uses OpenWrt with their own user interface.
This own user interface seems to lead me into my problem of the killswitch and/or the bypass not working.
I read in here I can configure a killswitch through firewall rules. Can you instruct me in how to do this?
My AXT-1800 is 192.168.178.1
My Fritzbox is 192.168.179.254
This device is not supported by the official OpenWrt project. As such, the version of OpenWrt you are running is GL-inet's custom fork which is heavily modified relative to the official firmware.
That said, in the official OpenWrt, simply removing the lan > wan zone forwarding will serve as a kill switch (leaving only lan > wgclient). Basically, if the VPN is down, no traffic will be allowed to flow from lan > wan. In theory, it should work on the GL-inet firmware.
If it doesn't work, though, you'll need to ask on GL-inet's user forums for help.
No, don't delete the lan zone.
Remove the forwarding from lan > wan.
Thank you soooo much!
It really does work. You don't believe how long I had this problem!
How can I show my gratitude?
You're welcome! Glad I could help.
If your problem is solved, please consider marking this topic as [Solved]. See How to mark a topic as [Solved] for a short how-to.
Thanks! 
