Hi,

When I tried Step 4 below on my Asus RT-N12 router, I got the message "The WAN VLAN ID is identical." when I click submit.

STEP 4 : Navigate to Basic -> WAN.
Click on ptm1.621
UNTICK LAN2 on both Port Binding and VLAN Tagging.
TICK LAN3 on Port Binding ONLY!
Click on Submit button!

Does anyone know how to get over it?

Thanks