In my RedHat 6.0 setup, I have included DHCP.
At first i created the /etc/dhcpd.conf by hand with vi. No problem.
At a later time, i made a few alterations to the mentioned dhcp
configuration file with the graphic tool linuxconf. This caused a system
hang at the next boot, when the dhcp daemon was activated. (Blinking
cursor - no further progress in boot).
Booted with a rescue disc, and renamed the configuration file,
unrecognisable to the daemon.
Rebooted normally succesful.
An anlysis of the configuration file showed, that linuxconf had used tab
stops as field delimiters instead of blank spaces. I then edited by vi,
left all parameters as is, but replaced tab stops with spaces. Heureka -
painless boot again.
This makes me assume, that linuxconf did something wrong.
I should perhaps add, that I use a dk-latin1 keyboard, allthough it has
not given problems in any other aspects.
dhcpd.conf editing by linuxconf was disabled for Red Hat Linux 7.