Linux rename network interface using udev rules

Sometimes it is convenient to have user assigned names to network interfaces – particularly when the MAC address of the interface remains constant but the bus on which it is attached may change because it’s a virtual machine.

All that is required to be done is create a file /etc/udev/rules.d/persistent-net.rules : This file used to exist earlier but has been phased out by most mainstream Linux distributions in favor of the consistent naming scheme or other methods like systemd-networkd.

The udev rules required in that file:

SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="aa:bb:cc:dd:ee:ff", NAME="wan"
SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="bb:cc:dd:ee:ff:aa", NAME="lan"
SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="cc:dd:ee:ff:aa:bb", NAME="lan2"

Save the file and reboot, the network interfaces should be assigned the new names as per the rules in this file.

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