    * Copyright (c) 1993, 1999 The Australian National University.
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms are permitted
    * provided that the above copyright notice and this paragraph are
    * duplicated in all such forms and that any documentation,
    * advertising materials, and other materials related to such
    * distribution and use acknowledge that the software was developed
    * by the Australian National University.  The name of the University
    * may not be used to endorse or promote products derived from this
    * software without specific prior written permission.
    * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

    * Copyright (c) 1994 The Australian National University.
    * All rights reserved.
    *
    * Permission to use, copy, modify, and distribute this software and its
    * documentation is hereby granted, provided that the above copyright
    * notice appears in all copies.  This software is provided without any
    * warranty, express or implied. The Australian National University
    * makes no representations about the suitability of this software for
    * any purpose.
    *
    * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
    * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
    * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
    * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
    * OF SUCH DAMAGE.
    *
    * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
    * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
    * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
    * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
    * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
    * OR MODIFICATIONS.

    * Copyright (c) 1989 Carnegie Mellon University.
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms are permitted
    * provided that the above copyright notice and this paragraph are
    * duplicated in all such forms and that any documentation,
    * advertising materials, and other materials related to such
    * distribution and use acknowledge that the software was developed
    * by Carnegie Mellon University.  The name of the
    * University may not be used to endorse or promote products derived
    * from this software without specific prior written permission.
    * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

    * Copyright (c) 1995 Pedro Roque Marques
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms are permitted
    * provided that the above copyright notice and this paragraph are
    * duplicated in all such forms and that any documentation,
    * advertising materials, and other materials related to such
    * distribution and use acknowledge that the software was developed
    * by Pedro Roque Marques.  The name of the author may not be used to
    * endorse or promote products derived from this software without
    * specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

    * Copyright (c) 1991 Gregory M. Christy.
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms are permitted
    * provided that the above copyright notice and this paragraph are
    * duplicated in all such forms and that any documentation,
    * advertising materials, and other materials related to such
    * distribution and use acknowledge that the software was developed
    * by Gregory M. Christy.  The name of the author may not be used to
    * endorse or promote products derived from this software without
    * specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
   
    * Copyright (c) 1995 Eric Rosenquist, Strata Software Limited.
    * http://www.strataware.com/
    *
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms are permitted
    * provided that the above copyright notice and this paragraph are
    * duplicated in all such forms and that any documentation,
    * advertising materials, and other materials related to such
    * distribution and use acknowledge that the software was developed
    * by Eric Rosenquist.	The name of the author may not be used to
    * endorse or promote products derived from this software without
    * specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

    ipv6cp.h - PPP IPV6 Control Protocol.
    Copyright (C) 1999	Tommi Komulainen <Tommi.Komulainen@iki.fi>

    Redistribution and use in source and binary forms are permitted
    provided that the above copyright notice and this paragraph are
    duplicated in all such forms.  The name of the author may not be
    used to endorse or promote products derived from this software
    without specific prior written permission.
    THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    */

    /*  Original version, based on RFC2023 :

    Copyright (c) 1995, 1996, 1997 Francis.Dupont@inria.fr, INRIA Rocquencourt,
    Alain.Durand@imag.fr, IMAG,
    Jean-Luc.Richier@imag.fr, IMAG-LSR.

    Copyright (c) 1998, 1999 Francis.Dupont@inria.fr, GIE DYADE,
    Alain.Durand@imag.fr, IMAG,
    Jean-Luc.Richier@imag.fr, IMAG-LSR.

    Ce travail a \351t\351 fait au sein du GIE DYADE (Groupement d'Int\351r\352t
    \311conomique ayant pour membres BULL S.A. et l'INRIA).

    Ce logiciel informatique est disponible aux conditions
    usuelles dans la recherche, c'est-\340-dire qu'il peut
    \352tre utilis\351, copi\351, modifi\351, distribu\351 \340 l'unique
    condition que ce texte soit conserv\351 afin que
    l'origine de ce logiciel soit reconnue.

    Le nom de l'Institut National de Recherche en Informatique
    et en Automatique (INRIA), de l'IMAG, ou d'une personne morale
    ou physique ayant particip\351 \340 l'\351laboration de ce logiciel ne peut
    \352tre utilis\351 sans son accord pr\351alable explicite.

    Ce logiciel est fourni tel quel sans aucune garantie,
    support ou responsabilit\351 d'aucune sorte.
    Ce logiciel est d\351riv\351 de sources d'origine
    "University of California at Berkeley" et
    "Digital Equipment Corporation" couvertes par des copyrights.

    L'Institut d'Informatique et de Math\351matiques Appliqu\351es de Grenoble (IMAG)
    est une f\351d\351ration d'unit\351s mixtes de recherche du CNRS, de l'Institut
    National
    Polytechnique de Grenoble et de l'Universit\351 Joseph Fourier regroupant
    sept laboratoires dont le laboratoire Logiciels, Syst\350mes, R\351seaux (LSR).

    This work has been done in the context of GIE DYADE (joint R & D venture
    between BULL S.A. and INRIA).

    This software is available with usual "research" terms
    with the aim of retain credits of the software.
    Permission to use, copy, modify and distribute this software for any
    purpose and without fee is hereby granted, provided that the above
    copyright notice and this permission notice appear in all copies,
    and the name of INRIA, IMAG, or any contributor not be used in advertising
    or publicity pertaining to this material without the prior explicit
    permission. The software is provided "as is" without any
    warranties, support or liabilities of any kind.
    This software is derived from source code from
    "University of California at Berkeley" and
    "Digital Equipment Corporation" protected by copyrights.

    Grenoble's Institute of Computer Science and Applied Mathematics (IMAG)
    is a federation of seven research units funded by the CNRS, National
    Polytechnic Institute of Grenoble and University Joseph Fourier.
    The research unit in Software, Systems, Networks (LSR) is member of IMAG.
    */

    * Copyright (c) 2000 Paul Mackerras.
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms are permitted
    * provided that the above copyright notice and this paragraph are
    * duplicated in all such forms.  The name of the author may not be
    * used to endorse or promote products derived from this software
    * without specific prior written permission.
    * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

    * The basic framework for this code came from the reference
    * implementation for MD5.  That implementation is Copyright (C)
    * 1991-2, RSA Data Security, Inc. Created 1991. All rights reserved.
    *
    * License to copy and use this software is granted provided that it
    * is identified as the "RSA Data Security, Inc. MD5 Message-Digest
    * Algorithm" in all material mentioning or referencing this software
    * or this function.
    *
    * License is also granted to make and use derivative works provided
    * that such works are identified as "derived from the RSA Data
    * Security, Inc. MD5 Message-Digest Algorithm" in all material
    * mentioning or referencing the derived work.
    *
    * RSA Data Security, Inc. makes no representations concerning either
    * the merchantability of this software or the suitability of this
    * software for any particular purpose. It is provided "as is"
    * without express or implied warranty of any kind.
    *
    * These notices must be retained in any copies of any part of this
    * documentation and/or software.
    *
    * NOTE: Cleaned-up and optimized, version of SHA1, based on the FIPS 180-1
    * standard, available at http://www.itl.nist.gov/div897/pubs/fip180-1.htm
    * Not as fast as one would like -- further optimizations are encouraged
    * and appreciated.

    Copyright (c) 1985, 1986 The Regents of the University of California.
    All rights reserved.

        This code is derived from software contributed to Berkeley by
        James A. Woods, derived from original work by Spencer Thomas
        and Joseph Orost.

        Redistribution and use in source and binary forms, with or without
        modification, are permitted provided that the following conditions
        are met:
        1. Redistributions of source code must retain the above copyright
	    notice, this list of conditions and the following disclaimer.
        2. Redistributions in binary form must reproduce the above
	    copyright notice, this list of conditions and the following
	    disclaimer in the documentation and/or other materials provided
	    with the distribution.
        3. All advertising materials mentioning features or use of this
	    software must display the following acknowledgement:
	     This product includes software developed by the University of
	     California, Berkeley and its contributors.
        4. Neither the name of the University nor the names of its
	    contributors may be used to endorse or promote products derived
	    from this software without specific prior written permission.

        THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS
        IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
        LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
        FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
        REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
        INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
        CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
        OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
        EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    Copyright (c) 1989 Regents of the University of California.  All
    rights reserved.

        Redistribution and use in source and binary forms are permitted
        provided that the above copyright notice and this paragraph are
        duplicated in all such forms and that any documentation,
        advertising materials, and other materials related to such
        distribution and use acknowledge that the software was developed
        by the University of California, Berkeley.	The name of the
        University may not be used to endorse or promote products derived
        from this software without specific prior written permission.
        THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
        PURPOSE.
