Description of problem:
export NETNAME=cluster
virsh net-define $NETNAME.xml
virsh net-autostart $NETNAME
virsh net-start $NETNAME

are not possible due to selinux restrictions, failing at:
Mar  2 08:01:16 marathon-02 dnsmasq[2831]: failed to open pidfile /var/run/libvirt/network/cluster.pid: Permission denied



Version-Release number of selected component (if applicable):
selinux-policy-3.7.19-137.el6.noarch

How reproducible:
always

Steps to Reproduce:
1. see description
2.
3.
  
Actual results:
commands do not produce running virtual network due to selinux restriction

Expected results:
proper labels on new files (see additional info).

Additional info:
----
time->Fri Mar  2 07:47:49 2012
type=SYSCALL msg=audit(1330696069.686:54433): arch=c000003e syscall=2 success=no exit=-13 a0=1b88a70 a1=241 a2=1b6 a3=0 items=0 ppid=1 pid=5654 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=2 comm="dnsmasq" exe="/usr/sbin/dnsmasq" subj=unconfined_u:system_r:dnsmasq_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1330696069.686:54433): avc:  denied  { write } for  pid=5654 comm="dnsmasq" name="network" dev=dm-0 ino=2752733 scontext=unconfined_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:virt_var_run_t:s0 tclass=dir
----
time->Fri Mar  2 07:55:54 2012
type=SYSCALL msg=audit(1330696554.804:54467): arch=c000003e syscall=2 success=no exit=-13 a0=137aa70 a1=241 a2=1b6 a3=0 items=0 ppid=1 pid=6044 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=2 comm="dnsmasq" exe="/usr/sbin/dnsmasq" subj=unconfined_u:system_r:dnsmasq_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1330696554.804:54467): avc:  denied  { write } for  pid=6044 comm="dnsmasq" name="network" dev=dm-0 ino=2752733 scontext=unconfined_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:virt_var_run_t:s0 tclass=dir
----
time->Fri Mar  2 07:56:46 2012
type=SYSCALL msg=audit(1330696606.492:54491): arch=c000003e syscall=2 success=no exit=-13 a0=2467a70 a1=241 a2=1b6 a3=0 items=0 ppid=1 pid=6185 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=2 comm="dnsmasq" exe="/usr/sbin/dnsmasq" subj=unconfined_u:system_r:dnsmasq_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1330696606.492:54491): avc:  denied  { write } for  pid=6185 comm="dnsmasq" name="network" dev=dm-0 ino=2752733 scontext=unconfined_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:virt_var_run_t:s0 tclass=dir
----
time->Fri Mar  2 07:56:46 2012
type=SYSCALL msg=audit(1330696606.613:54515): arch=c000003e syscall=2 success=no exit=-13 a0=9cda70 a1=241 a2=1b6 a3=0 items=0 ppid=1 pid=6294 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=2 comm="dnsmasq" exe="/usr/sbin/dnsmasq" subj=unconfined_u:system_r:dnsmasq_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1330696606.613:54515): avc:  denied  { write } for  pid=6294 comm="dnsmasq" name="network" dev=dm-0 ino=2752733 scontext=unconfined_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:virt_var_run_t:s0 tclass=dir
----
time->Fri Mar  2 07:56:50 2012
type=SYSCALL msg=audit(1330696610.733:54536): arch=c000003e syscall=2 success=no exit=-13 a0=cf5a70 a1=241 a2=1b6 a3=0 items=0 ppid=1 pid=6434 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=2 comm="dnsmasq" exe="/usr/sbin/dnsmasq" subj=unconfined_u:system_r:dnsmasq_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1330696610.733:54536): avc:  denied  { write } for  pid=6434 comm="dnsmasq" name="network" dev=dm-0 ino=2752733 scontext=unconfined_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:virt_var_run_t:s0 tclass=dir
----
time->Fri Mar  2 08:01:16 2012
type=SYSCALL msg=audit(1330696876.393:44611): arch=c000003e syscall=2 success=no exit=-13 a0=1bb1a70 a1=241 a2=1b6 a3=0 items=0 ppid=1 pid=2833 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dnsmasq" exe="/usr/sbin/dnsmasq" subj=system_u:system_r:dnsmasq_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1330696876.393:44611): avc:  denied  { write } for  pid=2833 comm="dnsmasq" name="network" dev=dm-0 ino=2752733 scontext=system_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:virt_var_run_t:s0 tclass=dir
----
time->Fri Mar  2 08:01:36 2012
type=SYSCALL msg=audit(1330696896.835:44631): arch=c000003e syscall=2 success=yes exit=10 a0=70ca70 a1=241 a2=1b6 a3=0 items=0 ppid=1 pid=2944 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dnsmasq" exe="/usr/sbin/dnsmasq" subj=system_u:system_r:dnsmasq_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1330696896.835:44631): avc:  denied  { write } for  pid=2944 comm="dnsmasq" name="cluster.pid" dev=dm-0 ino=2752861 scontext=system_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=system_u:object_r:virt_var_run_t:s0 tclass=file
type=AVC msg=audit(1330696896.835:44631): avc:  denied  { create } for  pid=2944 comm="dnsmasq" name="cluster.pid" scontext=system_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=system_u:object_r:virt_var_run_t:s0 tclass=file
type=AVC msg=audit(1330696896.835:44631): avc:  denied  { add_name } for  pid=2944 comm="dnsmasq" name="cluster.pid" scontext=system_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:virt_var_run_t:s0 tclass=dir
type=AVC msg=audit(1330696896.835:44631): avc:  denied  { write } for  pid=2944 comm="dnsmasq" name="network" dev=dm-0 ino=2752733 scontext=system_u:system_r:dnsmasq_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:virt_var_run_t:s0 tclass=dir

# after setenforce 0 and retry:
[root@marathon-02 virsh_create_network]# restorecon -vnR /var/
restorecon reset /var/run/libvirt/qemu context unconfined_u:object_r:virt_var_run_t:s0->unconfined_u:object_r:qemu_var_run_t:s0
restorecon reset /var/run/libvirt/network context unconfined_u:object_r:virt_var_run_t:s0->unconfined_u:object_r:dnsmasq_var_run_t:s0
restorecon reset /var/run/libvirt/network/cluster.pid context system_u:object_r:virt_var_run_t:s0->system_u:object_r:dnsmasq_var_run_t:s0
restorecon reset /var/log/yum.log context system_u:object_r:var_log_t:s0->system_u:object_r:rpm_log_t:s0