Red Hat ENTERPRISE LINUX 4 System Administration Manual page 188

Chapter 17. Network Configuration
Figure 17.17. Home Profile
You can also configure eth0 to activate in the Office profile only and to activate a PPP (modem)
device in the Home profile only. Another example is to have the Common profile activate eth0 and
an Away profile activate a PPP device for use while traveling.
To activate a profile at boot time, modify the boot loader configuration file to include the
netprofile=<profilename> option. For example, if the system uses GRUB as the boot loader
and /boot/grub/grub.conf contains:
title Red Hat Enterprise Linux (2.6.9-5.EL)
root (hd0,0)
kernel /vmlinuz-2.6.9-5.EL ro root=/dev/VolGroup00/LogVol00 rhgb quiet
initrd /initrd-2.6.9-5.EL.img
Modify it to the following (where <profilename> is the name of the profile to be activated at boot
time):
title Red Hat Enterprise Linux (2.6.9-5.EL)
root (hd0,0)
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