Not sure if it is the same issue, but I am getting a similar issue. DIR-835 product, but Chrome browser, not IE.
Occasionally when I attempt to view a web page I see the router's login page instead. All the while, the address bar shows the URL of the desired page (not the router login page). Only if I reload (Cmd-R) like crazy, or just come back later, does the correct page appear. Meanwhile I can open tabs and load other sites just fine.
My guess is that the router mistakenly returns its own IP address for DNS lookups from time to time, so the web request goes to the router instead and it just serves up the login page for any path it doesn't recognise (e.g. http://192.168.0.1/asdf/asdf.html).
But what to do about it? Haven't seen anything in the settings.
Thanks
LPS