29 March 2007
iftab
Posted by Christoph under: CLI .
In this article, I discuss the /etc/iftab file. This file contains descriptive information about the various network interfaces. iftab is only used by the program ifrename to assign a consistent network interface name to each network interface.
/etc/iftab defines a set of mappings. Each mapping contains an interface name and a set of selectors. The selectors allow ifrename to identify each network interface on the system. If a network interface matches all descriptors of a mapping, ifrename attempt to change the name of the interface to the interface name given by the mapping.