I have trouble with my Samsung S5e tablet using USB-LAN adapter.
netguard is activated
In setting network I get a message to disconnect Ethernet for changing network.
The “<->” symbol disappears, when I leave the dialog 
I deactivated hidden id in advanced privacy, because I fear a collision between the two firewalls (it worked on FP3)
Sometimes internet works with LAN-adapter, but is mostly blocked. When I deactivate netguard, access works. Netguard doesn’t show the block in protocol.
Tablet running with
e-1.12.3-s-20230616300623-dev-gts4lv
I don’t have the problem with Fairphone 3 running
IMG-e-1.8.1-r-20230206257804-dev-FP3
Any ideas?
I’ve asked the developer Marcel Bokhorst, got the answer that
wired connections are not supported - see github information
https://github.com/M66B/NetGuard#user-content-compatibility
“NetGuard is not supported for internet connections via a wire, like ethernet or USB, because the Android VPN service often doesn’t work properly in this situation.”
“The reason is that I can’t test it and that it is broken too often.”
I’d like to make it work anyway, so I’d be happy for hints. So far I won’t use netguard on my tablet 
I’ve kept trying, forgot about my posts here.
LAN-connection does work fine with my configuration.
only two exceptions actually:
App Lounge only works with mobile network (I’m lucky, I have the S5e with mobile Option)
c’t Magazin doesn’t work with LAN, works with WLAN and mobile Network
