WireGuard Traffic Routed Through SIM 1 When Ethernet WAN Connected - Spitz AX

I had my Spitz AX up and running on SIM 1. WireGuard was connected and my traffic routed through the WireGuard tunnel over the SIM 1 as expected. I then plugged an ethernet cable into the WAN port of the Spitz and into a port in a switch on my LAN. I ran a speed test and noticed that the results did not reflect my home ISP speed but did match the SIM 1 speed. I toggled the WireGuard client off and then back on. Same thing, traffic is being sent over SIM 1 and not the WAN port. With the WireGuard tunnel turned off the traffic does travel through my LAN and out through my ISP. Did a reboot and same behavior, when WireGuard is on the traffic is sent over the SIM 1 connection. Router is running 4.0-release50402.

I have tested this issue according to your description. We have a plan to optimize this issue in the next generation firmware. It will cost a long time. Please wait patiently.

mean while the support optimises this issue, you can add a static route to use ethernet wan

ip route add X.X.X.X/32 via Y.Y.Y.Y dev eth0

X.X.X.X is the wanguard server IP

Y.Y.Y.Y is the Ethernet gateway IP.

Where do I put this line? WireGuard config or somewhere else? And thank you for the temporary solution.

add the following on the cli of your router.

ip route add X.X.X.X/32 via Y.Y.Y.Y dev eth0

X.X.X.X is your wireguard IP.
Y.Y.Y.Y is the Ethernet gateway IP.

can you also share route output on your router once.