If we have no "network" line in the ks.cfg , or a incomplete line, the
installer will not ask for the infos wedon't supply in ks.cfg.

ex :

network --bootproto static  --ip xx.yy.zz.vv --netmask 255.255.255.0
--gateway xx.yy.zz.vv --nameserver xx.yy.zz.vv

with redhat 6.O :
	the installer ask for : domainename,machinename,secondary name server.
with redaht 6.2 : the installer ask nothing.

This is a "pin in the neck" when we have about 40 machines to install for a
customer (and no network). It's to long to start linuxconf or netcfg