Rename network interface
The best way to rename a network interface is through udev.
Edit the file:
/etc/udev/rules.d/70-persistent-net.rules
to change the interface name of a network device. The names of the network devices are listed in this file as follows:
# PCI device 0x11ab:0x4363 (sky2)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*",
ATTR{address}=="00:00:00:00:00:00",ATTR{dev_id}=="0x0", ATTR{type}=="1",
KERNEL=="eth*", NAME="eth0"
Rename network interface from eth0 to wan0
To rename interface eth0 to wan., edit file:
/etc/udev/rules.d/70-persistent-net.rules
and change NAME="eth0" to NAME="wan0"
# PCI device 0x11ab:0x4363 (sky2) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:00:00:00:00:00",ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="wan0"
For Centos/RHEL
Rename the network interface configuration file:# cd etc/sysconfig/network-scripts/
# mv ifcfg-eth0 ifcfg-wan0
Edit the network interface configuration file and replace all occurrences of the old name
eth0
with the new one
wan0
# vi /etc/sysconfig/network-scripts/ifcfg-wan0
For Ubuntu, Debian
Edit the
/etc/network/interfaces
file and replace all occurrences of the old name
eth0
with the new one
wan0# sudo nano /etc/network/interfaces
Test changes
Reboot the system to test changes:# rebootVerify new settings:
# ifconfig -a
Rename network interface from eth1 back to eth0
Q: Why does my network interface name change?
A: The interface name of a network device increases if the MAC address of a network card changes.
Edit the file
/etc/udev/rules.d/70-persistent-net.rules
Copy the new MAC address from eth1 to the line of your eth0 rule. Delete the rule for eth1. Save and close the file.
For Centos/RHEL
Check the network interface configuration located under:
# vi /etc/sysconfig/network-scripts/ifcfg-eth0
Don’t forget to replace the old MAC address with the new one.
For Ubuntu, Debian
Make sure
/etc/network/interfaces
file has correct configuration:
# sudo nano /etc/network/interfaces
Test changes
Reboot the system to test changes:
# reboot
Verify new settings:
# ifconfig -a