Why udev is renaming interface to a name other than what its mentioned in '70-persistent-net.rules' file ?

Solution Verified - Updated -

Issue

  • udev configuration file- /etc/udev/rules.d/70-persistent-net.rules has below rule;
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC-ADDRESS>", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
  • System has /etc/sysconfig/network-scripts/ifcfg-eth0 file in which DEVICE=eth0 and same MAC address as that of above udev file is mentioned.
  • Still after reboot , interface is coming up with name eth4. Why ?
  • dmesg has a log stating, udev: renamed network interface eth0 to eth4

Environment

  • Red Hat Enterprise Linux 6.5
  • udev

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