Description of problem:
Starting a new LXC container could not succeed because systemd could not call setrlimit

systemd 201 running in system mode. (+PAM +LIBWRAP +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ)
Detected virtualization 'lxc-libvirt'.

Welcome to Fedora 18 (Spherical Cow)!

Set hostname to <localhost.localdomain>.
Initializing machine ID from container UUID.
Setting RLIMIT_NOFILE failed: Permission denied
SELinux is preventing /usr/lib/systemd/systemd from using the 'setrlimit' accesses on a process.

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

If you believe that systemd should be allowed setrlimit access on processes labeled svirt_lxc_net_t 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 systemd /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:svirt_lxc_net_t:s0:c1,c2
Target Context                system_u:system_r:svirt_lxc_net_t:s0:c1,c2
Target Objects                 [ process ]
Source                        systemd
Source Path                   /usr/lib/systemd/systemd
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           dbus-1.6.12-1.fc18.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.11.1-98.fc18.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.9.11-200.fc18.x86_64 #1 SMP Mon
                              Jul 22 21:04:50 UTC 2013 x86_64 x86_64
Alert Count                   7
First Seen                    2013-08-05 13:24:42 EDT
Last Seen                     2013-08-05 13:24:45 EDT
Local ID                      52d56573-9468-4aa4-8b8a-3276bb77412d

Raw Audit Messages
type=AVC msg=audit(1375723485.293:1610): avc:  denied  { setrlimit } for  pid=12758 comm="dbus-daemon" scontext=system_u:system_r:svirt_lxc_net_t:s0:c1,c2 tcontext=system_u:system_r:svirt_lxc_net_t:s0:c1,c2 tclass=process


type=SYSCALL msg=audit(1375723485.293:1610): arch=x86_64 syscall=setrlimit success=no exit=EACCES a0=7 a1=7fff7a990f80 a2=7fff7a991170 a3=2ef39c items=0 ppid=1 pid=12758 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 ses=4294967295 tty=(none) comm=dbus-daemon exe=/usr/bin/dbus-daemon subj=system_u:system_r:svirt_lxc_net_t:s0:c1,c2 key=(null)

Hash: systemd,svirt_lxc_net_t,svirt_lxc_net_t,process,setrlimit

audit2allow

#============= svirt_lxc_net_t ==============
allow svirt_lxc_net_t self:process setrlimit;

audit2allow -R
require {
	type svirt_lxc_net_t;
	class process setrlimit;
}

#============= svirt_lxc_net_t ==============
allow svirt_lxc_net_t self:process setrlimit;


Additional info:
reporter:       libreport-2.1.5
hashmarkername: setroubleshoot
kernel:         3.9.11-200.fc18.x86_64
type:           libreport