+m4_dnl This file is
+m4_dnl Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
+m4_dnl
+m4_dnl It is part of adns, which is
+m4_dnl Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
+m4_dnl Copyright (C) 1999 Tony Finch <dot@dotat.at>