Network interface renamed in Fedora 15

I was trying to get non-NetworkManager networking running in Fedora 15, but kept failing. When I tried to start the network daemon it failed and something about eth0 missing got logged. Finally, I looked more closely at my dmesg output and noticed that at the end of the network section udev had renamed the interface from eth0 to something like p7p2. Changing my networking script to use that instead fixed it.