The following are resources which explain more about network interfaces.
8.6.1. Installed Documentation
/usr/share/doc/initscripts-version/sysconfig.txt
A guide to available options for network configuration files, including IPv6 options not covered in this chapter.
/usr/share/doc/iproute-version/ip-cref.ps
This file contains a wealth of information about the ip command, which can be used to manipulate routing tables, among other things. Use the ggv or kghostview application to view this file.
