@cfx69 found the issue happens when the local wan subnet has a conflict with remote LAN subnet.
To check the route to remote LAN:
ip route get 192.168.1.0/24
It should go by wgclient interface.
If it goes by eth/repeater interface, then the conflict exists.
Two workarounds:
-
change local wan ip subnet
-
add a route:
ip route add 192.168.1.0/24 dev wgclient scope link
The correspondent permanent setting can be done in luci, Network-routing: add a route like the following:
I think workaround 2 will be adopted in our future firmware release.