User Agent: Mozilla/5.0 (X11; Linux i686; rv:34.0) Gecko/20100101 Firefox/34.0 (Beta/Release) Build ID: 20140727030204 Steps to reproduce: I have 192.168.100.1 my Cable Modem and 192.168.1.1 my Router in the drop down awesome bar/url bar. If use the drop down links or if I type in the address. Actual results: Firefox 33.0a2 Aurora on Linux gives me a Unable to connect page although I can access them if they are found on the new tab page. Expected results: I should be able to load said pages. Both Firefox 31 and the the July 27 Nightly 34.0a1 builds both allow me to access said pages. I tried loading the pages in Chrome and Opera and they come up fine. I have downloaded and used three builds of Aurora since it became 33.0a2 and they all have this bug.

The above gives me an "Server not found Firefox can't find the server at 192.168.100.1." "Server not found Firefox can't find the server at 192.168.1.1."

Thanks for the report! Seems like bug 1041511. Please reopen if you think it is not duplicate.