Description of problem:
SELinux is preventing /usr/sbin/libvirtd from 'relabelfrom' accesses on the tun_socket .

*****  Plugin catchall (100. confidence) suggests  ***************************

If you believe that libvirtd should be allowed relabelfrom access on the  tun_socket by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep libvirtd /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:virtd_t:s0-s0:c0.c1023
Target Context                system_u:object_r:unlabeled_t:s0
Target Objects                 [ tun_socket ]
Source                        libvirtd
Source Path                   /usr/sbin/libvirtd
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           libvirt-daemon-0.10.2.2-3.fc18.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.11.1-67.fc18.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.8.0-rc2 #1 SMP Thu Jan 3
                              06:18:38 CET 2013 x86_64 x86_64
Alert Count                   4
First Seen                    2013-01-03 06:24:26 CET
Last Seen                     2013-01-03 20:43:55 CET
Local ID                      3f9e81b9-c854-45bf-ad62-5405d20b888c

Raw Audit Messages
type=AVC msg=audit(1357242235.837:102): avc:  denied  { relabelfrom } for  pid=904 comm="libvirtd" scontext=system_u:system_r:virtd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:unlabeled_t:s0 tclass=tun_socket


type=SYSCALL msg=audit(1357242235.837:102): arch=x86_64 syscall=ioctl success=no exit=EACCES a0=d a1=400454ca a2=7fdb4cddebf0 a3=11 items=0 ppid=1 pid=904 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 ses=4294967295 tty=(none) comm=libvirtd exe=/usr/sbin/libvirtd subj=system_u:system_r:virtd_t:s0-s0:c0.c1023 key=(null)

Hash: libvirtd,virtd_t,unlabeled_t,tun_socket,relabelfrom

audit2allow

#============= virtd_t ==============
#!!!! This avc is allowed in the current policy

allow virtd_t unlabeled_t:tun_socket relabelfrom;

audit2allow -R

#============= virtd_t ==============
#!!!! This avc is allowed in the current policy

allow virtd_t unlabeled_t:tun_socket relabelfrom;


Additional info:
hashmarkername: setroubleshoot
kernel:         3.8.0-rc2
type:           libreport