Ethernet Naming Convention

You can change network interface naming conventions for RHEL, CentOS, Oracle Linux, and Suse Linux systems.

Procedure

1. Open the grub file:

   $ vi /etc/default/grub

2. Add net.ifnames=0 biosdevname=0 at the end of the GRUB_CMDLINE_LINUX line:

   GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/swap vconsole.keymap=us crashkernel=auto rd.lvm.lv=centos/root vconsole.font=latarcyrheb-sun16 rhgb quiet net.ifnames=0 biosdevname=0"

3. Save the file and exit.

4. Check to ensure the changes you made are correct:

   $ grub2-mkconfig

5. If changes are correct, update the grub configuration:

   $ grub2-mkconfig -o /boot/grub2/grub.cfg

   If VM uses UEFI boot, update the grub configuration:

   grub2-mkconfig -o /boot/efi/EFI/{version}/grub.cfg

   where:

   • For ubuntu, {version} = ubuntu

   • For centos, {version} = centos

   • For RHEL & Oracle Linux, {version} = redhat

6. Change directory to network-scripts folder:

   $ cd /etc/sysconfig/network-scripts

7. Copy the interface file name from the original name ens192 to eth0:

   $ cp ifcfg-ens192 ifcfg-eth0

8. Open the ifcfg-eth0 file and change the NAME and DEVICE variables inside the file (that reflect the names of the interface) to eth0.

   This parameter should be set in ifcfg-eth0:

    
   ONBOOT=yes

   Sample output:

   Type=Ethernet
   PROXY_METHOD=none
   BROWSER_ONLY=no
   BOOTPROTO=dhcp
   DEFROUTE=yes
   IPV4_FAILURE_FATAL=no
   IPV6INIT=yes
   IPV6_AUTOCONF=yes
   IPV6_DEFROUTE=yes
   IPV6_FAILURE_FATAL=no
   NAME=ens192
   UUID=9a8547cd-4d40-4d51-bdfc-e213dl8828a6
   DEVICE=ens192
   ONBOOT=yes
   IPV6_PRIVACY=no