+This file is part of ipif, part of userv-utils
+
+userv-utils are
+Copyright 1996-2013 Ian Jackson <ijackson@chiark.greenend.org.uk>
+Copyright 1998 David Damerell <damerell@chiark.greenend.org.uk>
+Copyright 1999,2003
+ Chancellor Masters and Scholars of the University of Cambridge
+Copyright 2010 Tony Finch <fanf@dotat.at>