On 05/01/2014 10:56 AM, Steve Clark wrote: > I feel for you then. I guess we have been lucky in the 6 or 7 hardware > platforms we have used that the nics ( minimum 3, usually 4 or more ) > have always stayed the same names in the same order. That's actually an illusion. If the detection pulls it up in a different order, then by MAC address it will get put in the old order, at least with EL6. Here's a 'grep' excerpt showing the fun: ++++++++++ Apr 21 14:39:25 www kernel: udev: renamed network interface eth0 to rename2 Apr 21 14:39:25 www kernel: udev: renamed network interface eth1 to rename3 Apr 21 14:39:25 www kernel: udev: renamed network interface eth2 to eth0 Apr 21 14:39:25 www kernel: udev: renamed network interface eth3 to eth1 Apr 21 14:39:25 www kernel: udev: renamed network interface rename3 to eth3 Apr 21 14:39:25 www kernel: udev: renamed network interface rename2 to eth2 ++++++++++