NIS client configuration on Fedora 5

I'm having a problem with NIS (client) configuration on a FC5 machine. What I'm seeing is, ypbind is in the startup sequence for xinetd. The /etc/yp.conf file is present and configured correctly, i.e.

domain MYDOMAIN server MACHINE_NAME

And I read somewhere that I'm supposed to have the line:

NIS_DOMAIN=MYDOMAIN

in the file /etc/sysconfig/network, so I did that too. What I'm seeing is, when the machine boots, and I log in as root, ypbind is not running, and domainname is set to "(none)". It has been suggested to me that I write a script that does the command "domainname MYDOMAIN" and put it in the startup sequence before xinetd runs (I assume that ypbind is trying to start and craps out because domainname is not set). But I have a problem with that. Isn't the whole point of /etc/yp.conf to specify the domainname in one place on the system? Isn't this supposed to cause the domainname to be set at boot time?

Thanks for any info...

Nevermind...I figured it out. Add some code to /etc/rc.d/rc.sysinit.