Re-enable mDNSResponder
I followed the instructions here to disable the mDNSResponder:
http://support.apple.com/kb/HT3789?viewlocale=en_US&locale=en_US
I saved the original .plist file. When I tried to revert to the original I still have no network access.
I deleted the file I had editted and moved the original (copied) back to the original location. Restarted... and nothing. No internet at all.
I tried to manually launch mDNSResponder from Terminal, which also did not help. Terminal returned that it was already loaded.
Any help?