X-Git-Url: https://git.distorted.org.uk/~mdw/secnet/blobdiff_plain/ce5c098f8a19a42ddaeb488ed643ae3b5e697c7b..b7bf35dd7f852b82ebd3c6ff55ca714468826a69:/README

diff --git a/README b/README
index 3e8a157..a01156c 100644
--- a/README
+++ b/README
@@ -2,13 +2,37 @@ secnet - flexible VPN software
 
 * Copying
 
-secnet is Copyright (C) 1995--2003 Stephen Early <steve@greenend.org.uk>
-It is distributed under the terms of the GNU General Public License,
-version 2 or later.  See the file COPYING for more information.
+secnet is
+  Copyright 1995-2003 Stephen Early <steve@greenend.org.uk>
+  Copyright 2002-2014 Ian Jackson <ijackson@chiark.greenend.org.uk>
+  Copyright 1991      Massachusetts Institute of Technology
+  Copyright 1998      Ross Anderson, Eli Biham, Lars Knudsen
+  Copyright 1993      Colin Plumb
+  Copyright 1998      James H. Brown, Steve Reid
+  Copyright 2000      Vincent Rijmen, Antoon Bosselaers, Paulo Barreto
+  Copyright 2001      Saul Kravitz
+  Copyright 2004      Fabrice Bellard
+  Copyright 2002      Guido Draheim
+  Copyright 2005-2010 Free Software Foundation, Inc.
+  Copyright 1995-2001 Jonathan Amery
+  Copyright 1995-2003 Peter Benie
+  Copyright 2011      Richard Kettlewell
+  Copyright 2012      Matthew Vernon
+  Copyright 2013      Mark Wooding
+  Copyright 1995-2013 Simon Tatham
+
+secnet is distributed under the terms of the GNU General Public
+License, version 3 or later.  Some individual files have more
+permissive licences; where this is the case, it is documented in the
+header comment for the files in question.
+
+secnet 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.
+
+The file COPYING contains a copy of the GNU GPL v3.
 
-The IP address handling library in ipaddr.py is Copyright (C)
-1996--2000 Cendio Systems AB, and is distributed under the terms of
-the GPL.
 
 * Introduction
 
@@ -194,8 +218,11 @@ Defines:
   udp (closure => comm closure)
 
 udp: dict argument
-  address (string list): IPv6 or IPv4 addresses to listen and send on
-  port (integer): UDP port to listen and send on
+  address (string list): IPv6 or IPv4 addresses to listen and send on;
+   default is all local addresses
+  port (integer): UDP port to listen and send on; optional if you
+   don't need to have a stable address for your peers to talk to
+   (in which case your site ought probably to have `local-mobile true').
   buffer (buffer closure): buffer for incoming packets
   authbind (string): optional, path to authbind-helper program
 
@@ -258,8 +285,12 @@ is one.  network-manager always sets up a default route.  The result
 is that the wifi always has a default route (so is useable); ppp
 (being a point-to-point link) does not need one.
 
-The use of polypath currently requires that secnet have root
-privilege, to make the setsockopt(,,SO_BINDTODEVICE,) call.
+The use of polypath requires that secnet be started with root
+privilege, to make the setsockopt(,,SO_BINDTODEVICE,) calls.  If the
+configuration specifies that secnet should drop privilege (see
+`userid' above), secnet will keep a special process around for this
+purpose; that process will handle local network interface changes but
+does not deal with any packets, key exchange, etc.
 
 polypath support is only available when secnet is built against an
 IPv6-capable version of adns (because it wants features in the newer