@Clive_A Thanks for the answer. I did not realize I had to update the firmware as the Upgrade button seemed to have no effect. After update I could setup Option 121 with an "hex array" and things are...

I recently configured a ER7212PC router. My site has 3 interconnected LAN. I added 2 static routes to the router and they are working fine. Unfortunately, the DHCP server running on the router does...