X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=ipif%2Fmech-sequence.c;h=273638a1b3ca14a6f8f09319a12c238190e52b57;hb=9028e234bb74a97396855e63d9ca598c1a554dc5;hp=2090b37dd9b264ebb570e3868bb83aafb48e6c3e;hpb=f9e59051127e72847e1bee84ad52670e875f7d2f;p=userv-utils.git

diff --git a/ipif/mech-sequence.c b/ipif/mech-sequence.c
index 2090b37..273638a 100644
--- a/ipif/mech-sequence.c
+++ b/ipif/mech-sequence.c
@@ -1,10 +1,34 @@
 /*
- * Sequence number / nonce mechanism
+ * Sequence number / nonce mechanism for udp tunnel
  *
+ * mechanisms: nonce, sequence
  * arguments: none
  *
+ * restrictions: none
  * encoding: prepend 4 bytes of sequence arithmetic serial number
- * decoding: check increasingness, or ignore
+ * decoding: check increasingness (sequence), or ignore (nonce)
+ */
+/*
+ * This file is part of ipif, part of userv-utils
+ *
+ * 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>
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with userv-utils; if not, see http://www.gnu.org/licenses/.
  */
 
 #include <netinet/in.h>