I have a DIR-865L using a gigabyte cable modem. I have connected directly through the modem using manual DNS settings for my device with no trouble.
I want the manual DNS settings in the router so that all devices behind the modem use the manual DNS settings from the modem. I cannot change the DNS settings in the modem or in some devices downstream from the router.
When I restore my device settings to auto DNS, reset and configure the router using manual network setup and putting in the two DNS addresses I want to use, I cannot connect to the sites I want. I have internet connection but the specific sites I want to visit using the DNS settings won't work.
If I set the router up as a static IP with the same DNS settings, it will work for all devices downstream to let me reach those sites. It does create other connectivity problems within the network that should be avoidable by using the router in normal dynamic mode without a static IP. But when I go that route, the router does not appear to use the DNS settings I input in the manual network setup.
Any suggestions?