Linux Network Interface Naming

Do you have network interfaces that no longer start at 0 (eg: eth0, em1, etc...)?

Edit udev Rules

To renumber the interfaces, you can edit the udev rules at:

/etc/udev/rules.d/70-persistent-net.rules

Remove lines defining the extraneous interfaces that you don't want. Once done, ensure that your network configs are correct (Red Hat based only)

# cd /etc/sysconfig/network-scripts/
# ls ifcfg*

Ensure the scripts matches up to the interfaces you defined in the udev rules. Once completed, reboot the machine.

See Also

• Udev Rules