Description of problem: When I click the 'OFF' next to 'Ethernet (eth0)' in the NETWORK CONFIGURATION panel, the state goes to 'Connecting' for a while, and then goes back to OFF, and tries again. It never connects. This is in a virtual machine with the 'Red Hat, Inc Virtio network device'. This works in other similar virtual machines with previous versions of Fedora. In addition 'dhclient eth0' hangs for a while and produces no output. Version-Release number of selected component (if applicable): Fedora 18-Alpha
Please feel free to reopen the bug if you hit the issue in Fedora 18.