You're connected to the internet, you've checked the connections, you've got on other devices , you've asked co-workers if they are having issues with the internet, you've pulled your hair out, banged your head against the wall, you get my drift.
Whatever you do or try your $2000 MacBook Pro will not do one simple thing CONNECT TO THE INTERNET!!
Hopefully this solution will work for some of you and save the hair on your head.
Run these commands from terminal(copy command from sudo to plist):
sudo launchctl unload /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
sudo launchctl load /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
and bingo bango everything is just peachy again!