Network cards udev persistent binding

fileserver-01:/etc/udev/rules.d# cat z25_persistent-net.rules
# This file was automatically generated by the /lib/udev/write_net_rules
# program, probably run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single line.
# MAC addresses must be written in lowercase.

# PCI device 0x12ae:0x0001 (acenic)
SUBSYSTEM=="net", DRIVERS=="?*", ATTR{address}=="00:60:cf:20:27:e5", 
NAME="eth0"