documentation/Examples/Debian/Restore Old Interface Names.md

Procedure

1. Sign in as root user

2. Open /etc/default/grub with nano, e.g.

   nano /etc/default/grub
   

3. Add net.ifnames=0 to the GRUB_CMDLINE_LINUX_DEFAULT option, e.g.

   GRUB_CMDLINE_LINUX_DEFAULT="... net.ifnames=0"
   

   !!! warning "Caution"

    Be mindful of the existing options set for `GRUB_CMDLINE_LINUX_DEFAULT`. Append `net.ifnames=0` to the end of them if they exist. The `...` in the example above indicates an indeterminate amount of options irrelevant to the guide.
   

4. Save and run update-grub && reboot

5. Finally, run ip address to inspect network interfaces for names like eth0 and eth1