Description of problem:

In /etc/dbus-1/system.d/avahi-dbus.conf one can find:

  <policy group="netdev">
    <allow send_destination="org.freedesktop.Avahi"/>
    <allow receive_sender="org.freedesktop.Avahi"/>
  </policy>

The problem is that there is no group "netdev" and I do not see any
package script which would create such thing.  As a result the
following happens:

# /etc/init.d/messagebus start
Starting system message bus: Unknown group "netdev" in message bus configuration
file
                                                           [  OK  ]

Version-Release number of selected component (if applicable):
avahi-0.6.15-3.fc7

How reproducible:
always