Ok, I configured bridge mode to my PC and it seems to be working.
However, I noticed I had to enable LAN DHCP server in RUTX09 for this to be working, doesn’t matter even if I set my PC to static address.
However, when I change MAC address from my PC’s to Asus, and plug it in Asus again, connection starts breaking down again. Works for a few minutes then link goes down, then up again, then down again, etc…
Asus log:
Dec 19 18:46:41 kernel: eth0 (Int switch port: 0) (Logical Port: 0) (phyId: 1) Link DOWN.
Dec 19 18:46:45 kernel: eth0 (Int switch port: 0) (Logical Port: 0) (phyId: 1) Link Up at 1000 mbps full duplex
Dec 19 18:46:46 WAN(0) Connection: WAN(0) link up.
Dec 19 18:46:46 rc_service: wanduck 1521:notify_rc restart_wan_if 0
Dec 19 18:46:54 kernel: eth0 (Int switch port: 0) (Logical Port: 0) (phyId: 1) Link DOWN.
Dec 19 18:46:58 kernel: eth0 (Int switch port: 0) (Logical Port: 0) (phyId: 1) Link Up at 1000 mbps full duplex
Dec 19 18:46:58 WAN(0) Connection: WAN(0) link up.
Dec 19 18:46:58 rc_service: wanduck 1521:notify_rc restart_wan_if 0
Dec 19 18:47:18 kernel: eth0 (Int switch port: 0) (Logical Port: 0) (phyId: 1) Link DOWN.
Dec 19 18:47:20 kernel: eth0 (Int switch port: 0) (Logical Port: 0) (phyId: 1) Link Up at 1000 mbps full duplex
Dec 19 18:47:22 WAN(0) Connection: WAN(0) link up.
Dec 19 18:47:22 rc_service: wanduck 1521:notify_rc restart_wan_if 0
Dec 19 18:47:22 kernel: eth0 (Int switch port: 0) (Logical Port: 0) (phyId: 1) Link DOWN.
Dec 19 18:47:26 kernel: eth0 (Int switch port: 0) (Logical Port: 0) (phyId: 1) Link Up at 1000 mbps full duplex
Dec 19 18:47:28 WAN(0) Connection: WAN(0) link up.
Dec 19 18:47:28 rc_service: wanduck 1521:notify_rc restart_wan_if 0
Dec 19 18:47:36 wan: finish adding multi routes
Dec 19 18:47:37 WAN(0) Connection: WAN was restored.
EDIT:
After hours of fiddling, I finally changed mode from Bridge to Passthrough with Disable DHCP set to OFF and typed in my router’s MAC address.
Now everything seems to be working. No connection drops.
My router received private WAN IP just as it should (I’m behind cgnat).
So now my question is, what’s so different with Passthrough mode that it works, and Bridge doesn’t ?