Hi,
I'm on Fedora 22 and trying:sandbox -X -H home_sandbox -T tmp_sandbox -t sandbox_web_t firefox danwalsh.livejournal.com
grep Xephyr /var/log/audit/audit.log | audit2allow -M mypol
-- selinux mailing list selinux@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/selinux