I am having a very frustrating problem. My 2009 iMac is connected to our network by Ethernet, however it cannot access the Internet.
All my other devices work fine, and local adresses (192.168.0.1 for example) work fine. Things I have tried so far:
Restarting Router and iMac
Connected to a different network, same results
Changed DNS, flushed DNS-Cache and tried to open IP's directly in Chrome
Removed Network completely, deleting "SystemPreferences" Folder
Pinging IP's in Terminal results in timeouts, pinging hosts in "cannot resolve: Unknown Host".
At this point I have spent several days of searching through forums and trying everything I can think of.
How do I resolve this issue?