like i folloed the DIR-615 instructions on how to use it as just a wap, but how can i be sure NAT is disabled. If this thing is trying to NAT on conjunction with my router, it can mess up my online game hosting.
EDIT: What I did was change the IP of the 2nd Router (DIR-615) to 10.10.10.1 so its not even on the network. It need not be on the network and no device needs to know its IP. The wifi portion and the switch are completely enslaved by the linksys, as far as ip and networking are concerned. I just did a test, and I can connect wirelessly no problem, and the other computer connected to it by ethernet has no issue either. To access the router all one must do is make his or her IP on the 10.10.10.x/24 network. (or whatever off your network IP range you chose) Wireless and hard-wired connectivity are maintained, but to other than Router 2 navigation on the intranet or internet is not possible without using a 192.168.2.x/24 address. I think, now that router2 is in its own world, any NAT issues have been quarentined.
I believe any guide on adding a 2nd router and making it a WAP, wireless access point, or a switch simply in need of more ports, should add changing the IP of router2 to somewhere off the network. Most guides include giving router2 an IP within the network, and say that it is required. This I now know is not true. I thought long and hard as to why router2 would require an IP and could not think of one; Other than wanting to easily access router 2 for whatever reason. This however is not worth it for the problems that can ensue. D-link should change their manual, seeing as you can't make this relatively expensive router an access point easily without ensureing firewall, and nat are off.