From the screenshot i would guess that you are running with two default gateways, which is a bad idea anyway. For what i can see the MAC address in question is that of your gateway, which is what i expect since the traffic is routed through it.
From the screenshot i would guess that you are running with two default gateways, which is a bad idea anyway. For what i can see the MAC address in question is that of your gateway, which is what i expect since the traffic is routed through it.