Background information: To get my Atheros AR8161 Ethernet card to work, I had to build a driver for it by downloading https://www.kernel.org/pub/linux/projects/backports/2013/03/04/compat-drivers-2013-003-04-u.tar.bz2 and following the instructions in http://www.linuxfoundation.org/collaborate/workgroups/networking/alx. For reasons unknown to me, Fedora does not support this card. This solution worked fine with kernel 3.9.4 (version 200.fc18). But after upgrading to kernel 3.9.5 (version 201.fc18), the driver no longer works. You can fix the bug I'm reporting very easily by just writing "Fedora doesn't support your Ethernet card" and changing the bug's status to "WONT-FIX". Description of problem: No network connection after booting. Version-Release number of selected component (if applicable): kernel 3.9.5 (version 201.fc18). How reproducible: Every time Steps to Reproduce: 1. Reboot 2. ping www.google.com Actual results: ping: unknown host www.google.com Expected results: PING www.google.com (173.194.75.105) 56(84) bytes of data. 64 bytes from ve-in-f105.1e100.net (173.194.75.105): icmp_seq=1 ttl=250 time=34.3 ms ... Additional info: My laptop's Ethernet card works for a few hours under Fedora 18 and then stops, so I use the wireless connection instead. My new desktop's wireless card card doesn't work at all with Fedora 18, and as you can see, I've had lots of trouble getting the wired connection working. I strongly encourage the Fedora team to support a wider variety of wireless and wired network cards.
*** This bug has been marked as a duplicate of bug 842367 ***