I've been working on this problem for the last few weeks and have made no progress. I recently flashed the newest shibby build on my E3200 and so far i'm really happy with the options available, I can't seem to solve my problem.
I currently have a Cisco DPC3825 wireless cable modem in bridge mode, connected to the WAN port on my E3200. The IP address for the E3200 is 192.168.1.1 and it's configured to assign IP addresses on the 192.168.1.xxx subnet. The Cisco cable modem is assigned the IP address 192.168.100.1 which is the default when it is in Bridge Mode. When I plug computers into the LAN ports on the E3200 they're being assigned IP's on the 192.168.100.xxx subnet, and are unable to access the internet. If I assign a static IP of 192.168.1.xxx to a computer it is able to connect to the internet. I have run a program on my network and it is showing that there are 2 DHCP servers running, 1 at 192.168.1.1 and the other at 192.168.100.1. I'm trying to figure out how to properly configure my network so I can automatically assign IP's on the 192.168.1.xxx subnet and fix this problem. Before I moved to a new city I was using this exact same configuration and having no problems at all. Since moving my computer are being assigned incorrect IP's
For trouble shooting I have tried 4 different wireless routers, running various stock and 3rd party firmware. I have replaced the cable modem from my ISP. I have tried 4 different computers including an OSX and Linux machine to rule out any windows config issues. I have segregated all the components on my network, if I connect directly to the E3200 with no cable modem connected my computers are assigned the proper 192.168.1.xxx IP addresses. As soon as I plug the cable modem in I start getting IP problems.
I'm really hoping someone out there can help me sort out this problem, I'm getting tired of manually assigning IP addresses to computers on my network and I would like things to go back to working like they used too. The only other thing I can think of trying is removing my wireless router from the picture and putting the ISP's cable modem back into normal mode and using that a modem and wireless router, but I would like to avoid that since I have read that the unit makes a lousy router.
Thanks in advance