Additional info:
*** Bug 947211 has been marked as a duplicate of this bug. ***
xl2tpd-1.3.1-13.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/xl2tpd-1.3.1-13.fc18
xl2tpd-1.3.1-6.el6 has been submitted as an update for Fedora EPEL 6. https://admin.fedoraproject.org/updates/xl2tpd-1.3.1-6.el6
Package xl2tpd-1.3.1-6.el6: * should fix your issue, * was pushed to the Fedora EPEL 6 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=epel-testing xl2tpd-1.3.1-6.el6' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-EPEL-2013-0874/xl2tpd-1.3.1-6.el6 then log in and leave karma (feedback).
xl2tpd-1.3.1-13.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.