Recently, my parents upgraded from AT&T’s old ADSL, to the new “UVerse” ADSL2+. With it came a new Motorola NVG510 UVerse all-in-one router / wireless access point / ADSL2+ modem combo. In my opinion, it’s routing and wireless abilities are total crap. Long ago I installed a Linksys WRT54G router that has been flashed with DD-WRT. This allows bandwidth monitoring, proper port forwarding, and also gives me the ability to connect via VPN remotely to help them out with problems on rare occasion. After their new Motorola UVerse modem was installed, my first order of business was to strip it of all routing and wireless functions, and make it just a router. On the old Novatel modems, this was called IP Passthrough, and pretty easy to set up. Now it’s changed and can take a little finesse to set up.
How to enable IP Passthrough on the Motorola NVG510 UVerse Gateway
I assume you already have a router to connect you NVG510 to. Go ahead and connect the routers WAN port to one of the LAN ports on the UVerse modem. You will need the MAC address of the WAN port on your router. You can usually find this on a sticker on the bottom of the unit. I’m going to pretend mine is AB:CD:EF:GH:IJ:KM for the scope of this article.
The router you are adding needs to have a LAN address that is not on the 192.168.1.x subnet. If you absolutely must have your router on that subnet, you can change the IP/subnet of the NVG510. If you need help with that, post in the comments and I would be glad to lend a hand.
With you computer connect to one of the LAN ports on the NVG510, navigate to the configuration page. By default it is http://192.168.1.254. You will see this page: