Description of problem:

cups will not start up on various Red Hat Linux 7.3 clients with updates.
Looking through netstat -natp we are seeing ypbind consistently binding to port
631 which is what IPP uses. 

Version-Release number of selected component (if applicable):

ypbind-1.10-7
kernel-2.4.18-24.7.x
cups-1.1.14-15.2   [and backport of rawhide cups]

How reproducible:

60% of 200 clients here are seeing it... have not figured out why 40% arent.

Here is the /etc/yp.conf with edits for security reasons (yyy|xxxx)

# /etc/yp.conf - ypbind configuration file
# Valid entries are
#
#domain NISDOMAIN server HOSTNAME
#       Use server HOSTNAME for the domain NISDOMAIN.
#
#domain NISDOMAIN broadcast
#       Use  broadcast  on  the local net for domain NISDOMAIN
#
#ypserver HOSTNAME
#       Use server HOSTNAME for the  local  domain.  The
#       IP-address of server must be listed in /etc/hosts.
#
domain yyy server yyy.xxxx.gov


Steps to Reproduce:
1. install 7.3
2. upgrade to latest updates
3. configure yp as above, and cups to browsepoll from specific machine
4. reboot
5. watch cups not be able to bind to port 631.