This bug was fixed in the package lightdm - 1.16.7-0ubuntu1
--------------- lightdm (1.16.7-0ubuntu1) wily; urgency=medium
* New upstream release: - Fix dm-tool add-local-seat not working because LightDM is trying to connect with TCP/IP (LP: #1529454)
-- Robert Ancell <email address hidden> Mon, 25 Jan 2016 17:35:34 +1300
This bug was fixed in the package lightdm - 1.16.7-0ubuntu1
---------------
lightdm (1.16.7-0ubuntu1) wily; urgency=medium
* New upstream release:
- Fix dm-tool add-local-seat not working because LightDM is trying to
connect with TCP/IP (LP: #1529454)
-- Robert Ancell <email address hidden> Mon, 25 Jan 2016 17:35:34 +1300