I often leave my Mac for some time to do assorted tasks. When I return and log into the screensaver, I can't visit my homepage, Google, because the Ethernet connection has disconnected, requiring a few minutes to reestablish DHCP before I can Google again. Is there a way to keep the Ethernet connection alive while my computer idles?
I'm using Mac OS X 10.8.4 Mountain Lion x64; on a 2013 MacBook Pro 15"; with an official Apple Mini DVI to Gigabit Ethernet adapter; plugged into a good cat5 cable.
Spotlight -> System Preferences -> Energy Saver -> Power Adapter -> Computer sleep -> Never
andEnergy Saver -> Battery -> Computer sleep -> Never