On Apr 19, 2012, at 11:25, Scott Robbins wrote: > I don't know when CentOS started doing this--I know when I did a fresh > CentOS 6.x install (back when 6.x was first available), it didn't do it. I think you are right. My one new Dell system that doesn't use em1 is the oldest one which I installed before 6.2 was available (and possibly 6.1 as well). > Oops, that's not the solution.... that's here.. > > http://fedoraproject.org/wiki/Talk:Features/ConsistentNetworkDeviceNaming Removing the biosdevname RPM sounds promising, and I'll test it with a kickstart install this afternoon. However, what's the best way to fix existing systems? If I just remove the biosdevname RPM and reboot, I don't think that eth0 will come up, as there is no ifcfg-eth0 script. Do I have to rename the ifcfg-em1 script and fix the DEVICE name inside the file? Or is there a way to regenerate the ifcfg-eth0 file from the command line? BTW, I cannot find a single reference to the biosdevname binary in any of the startup scripts or udev rules, so I have no idea how it gets invoked in the first place, but I sure hope that removing it will fix this issue. Alfred