Description of problem:
After system update the system startup will halt for about 20 minutes because
the init IPv6 is segfaulting and consuming all of the system CPU time.

Version-Release number of selected component (if applicable):
initscripts-8.40-1

How reproducible:
Always.

Steps to Reproduce:
1. Install FC6test3;
2. Perform a system update with yum;
  
Actual results:
System will have a lot of difficulty to start up again. There is no lockup, but
it will take a lot of time the system will past the network startup.

Expected results:
No such issues.

Additional info:

If I do get the system up and issue "/etc/init.d/network restart" then I get this:
[root@lappar ~]# /etc/init.d/network restart
/etc/init.d/network: line 54:  2240 Segmentation fault     
/etc/sysconfig/network-scripts/init.ipv6-global stop pre
Shutting down loopback interface:  /etc/sysconfig/network-scripts/ifdown-eth:
line 67:  2364 Segmentation fault     
/etc/sysconfig/network-scripts/ifdown-ipv6 ${CONFIG}
                                                           [  OK  ]
/etc/init.d/network: line 54:  2432 Segmentation fault     
/etc/sysconfig/network-scripts/init.ipv6-global stop post
</etc/init.d/network: line 54:  2498 Segmentation fault     
/etc/sysconfig/network-scripts/init.ipv6-global start pre
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:  
Determining IP information for eth0... done.
                                                           [  OK  ]
/etc/init.d/network: line 54:  2771 Segmentation fault     
/etc/sysconfig/network-scripts/init.ipv6-global start post
[root@lappar ~]# 

The issue is not kernel related - tested with kernel-2.6.17-1.2630.fc6 and
kernel-2.6.17-1.2647.fc6

How to disable the IPv6 as I do not even need it?