Hmm. The new "NetworkManager" stuff is just plain broke. Very friggin annoying. So I set a static IP and unchecked the network manager setting only to find each time I reboot the machine, the network interface eth0 did not start. Arrrrgh!!! Finally figured out what was going. By default the 'network' service does not start. So after enabling the service and restarting it, eth0 appears. Yay. Rebooted the machine as a test and all is (finally) good.