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Description of problem:
Install RHEV-H - Red Hat Enterprise Virtualization Hypervisor release 6.3 (20120815.0.auto8)
After installation VDSM service failed to start:

/etc/init.d/vdsmd start
checking certs..
vdsm: libvirt already configured for vdsm                  [  OK  ]
Starting iscsid: 
vdsm: Failed to define network filters on libvirt          [FAILED]

/etc/init.d/vdsmd try to run /usr/share/vdsm/nwfilter.py but the file doesn't exist.

Version-Release number of selected component (if applicable):
Red Hat Enterprise Virtualization Hypervisor release 6.3 (20120815.0.auto8)
vdsm-4.9.6-32.0.el6_3.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Install RHEV-H - Red Hat Enterprise Virtualization Hypervisor release 6.3 (20120815.0.auto8)

  
Actual results:
VDSM service failed to start

Expected results:
VDSM service should be up.

http://gerrit.ovirt.org/7821

Verified with 

root@dell-r210ii-08 ~]# cat /etc/redhat-release 
Red Hat Enterprise Virtualization Hypervisor release 6.3 (20120920.0.rhev31.el6_3)

vdsm-reg-4.9.6-34.0.el6_3.noarch

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2012-1508.html