diff --git a/ggsn/Makefile.am b/ggsn/Makefile.am
index c15f767..0aff773 100644
--- a/ggsn/Makefile.am
+++ b/ggsn/Makefile.am
@@ -1,5 +1,7 @@
 bin_PROGRAMS = ggsn
 
+AUTOMAKE_OPTIONS = subdir-objects
+
 AM_LDFLAGS = @EXEC_LDFLAGS@
 
 AM_CFLAGS = -O2 -D_GNU_SOURCE -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' -ggdb
@@ -8,5 +10,6 @@
 
 #ggsn_DEPENDENCIES = ../gtp/libgtp.la
 
-ggsn_SOURCES = ggsn.c tun.c tun.h cmdline.c cmdline.h ippool.h ippool.c syserr.h syserr.c lookup.c lookup.h
+ggsn_SOURCES = ggsn.c ../lib/tun.c ../lib/tun.h cmdline.c cmdline.h ../lib/ippool.h ../lib/ippool.c ../lib/syserr.h ../lib/syserr.c ../lib/lookup.c ../lib/lookup.h
+#ggsn_SOURCES = ggsn.c cmdline.c cmdline.h
 
diff --git a/ggsn/getopt.c b/ggsn/getopt.c
deleted file mode 100644
index 9bafa45..0000000
--- a/ggsn/getopt.c
+++ /dev/null
@@ -1,1055 +0,0 @@
-/* Getopt for GNU.
-   NOTE: getopt is now part of the C library, so if you don't know what
-   "Keep this file name-space clean" means, talk to drepper@gnu.org
-   before changing it!
-   Copyright (C) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001
-   	Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library 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
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
-   Ditto for AIX 3.2 and <stdlib.h>.  */
-#ifndef _NO_PROTO
-# define _NO_PROTO
-#endif
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#if !defined __STDC__ || !__STDC__
-/* This is a separate conditional since some stdc systems
-   reject `defined (const)'.  */
-# ifndef const
-#  define const
-# endif
-#endif
-
-#include <stdio.h>
-
-/* Comment out all this code if we are using the GNU C Library, and are not
-   actually compiling the library itself.  This code is part of the GNU C
-   Library, but also included in many other GNU distributions.  Compiling
-   and linking in this code is a waste when using the GNU C library
-   (especially if it is a shared library).  Rather than having every GNU
-   program understand `configure --with-gnu-libc' and omit the object files,
-   it is simpler to just do this in the source for each such file.  */
-
-#define GETOPT_INTERFACE_VERSION 2
-#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
-# include <gnu-versions.h>
-# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
-#  define ELIDE_CODE
-# endif
-#endif
-
-#ifndef ELIDE_CODE
-
-
-/* This needs to come after some library #include
-   to get __GNU_LIBRARY__ defined.  */
-#ifdef	__GNU_LIBRARY__
-/* Don't include stdlib.h for non-GNU C libraries because some of them
-   contain conflicting prototypes for getopt.  */
-# include <stdlib.h>
-# include <unistd.h>
-#endif	/* GNU C library.  */
-
-#ifdef VMS
-# include <unixlib.h>
-# if HAVE_STRING_H - 0
-#  include <string.h>
-# endif
-#endif
-
-#ifndef _
-/* This is for other GNU distributions with internationalized messages.  */
-# if defined HAVE_LIBINTL_H || defined _LIBC
-#  include <libintl.h>
-#  ifndef _
-#   define _(msgid)	gettext (msgid)
-#  endif
-# else
-#  define _(msgid)	(msgid)
-# endif
-#endif
-
-/* This version of `getopt' appears to the caller like standard Unix `getopt'
-   but it behaves differently for the user, since it allows the user
-   to intersperse the options with the other arguments.
-
-   As `getopt' works, it permutes the elements of ARGV so that,
-   when it is done, all the options precede everything else.  Thus
-   all application programs are extended to handle flexible argument order.
-
-   Setting the environment variable POSIXLY_CORRECT disables permutation.
-   Then the behavior is completely standard.
-
-   GNU application programs can use a third alternative mode in which
-   they can distinguish the relative order of options and other arguments.  */
-
-#include "getopt.h"
-
-/* For communication from `getopt' to the caller.
-   When `getopt' finds an option that takes an argument,
-   the argument value is returned here.
-   Also, when `ordering' is RETURN_IN_ORDER,
-   each non-option ARGV-element is returned here.  */
-
-char *optarg;
-
-/* Index in ARGV of the next element to be scanned.
-   This is used for communication to and from the caller
-   and for communication between successive calls to `getopt'.
-
-   On entry to `getopt', zero means this is the first call; initialize.
-
-   When `getopt' returns -1, this is the index of the first of the
-   non-option elements that the caller should itself scan.
-
-   Otherwise, `optind' communicates from one call to the next
-   how much of ARGV has been scanned so far.  */
-
-/* 1003.2 says this must be 1 before any call.  */
-int optind = 1;
-
-/* Formerly, initialization of getopt depended on optind==0, which
-   causes problems with re-calling getopt as programs generally don't
-   know that. */
-
-int __getopt_initialized;
-
-/* The next char to be scanned in the option-element
-   in which the last option character we returned was found.
-   This allows us to pick up the scan where we left off.
-
-   If this is zero, or a null string, it means resume the scan
-   by advancing to the next ARGV-element.  */
-
-static char *nextchar;
-
-/* Callers store zero here to inhibit the error message
-   for unrecognized options.  */
-
-int opterr = 1;
-
-/* Set to an option character which was unrecognized.
-   This must be initialized on some systems to avoid linking in the
-   system's own getopt implementation.  */
-
-int optopt = '?';
-
-/* Describe how to deal with options that follow non-option ARGV-elements.
-
-   If the caller did not specify anything,
-   the default is REQUIRE_ORDER if the environment variable
-   POSIXLY_CORRECT is defined, PERMUTE otherwise.
-
-   REQUIRE_ORDER means don't recognize them as options;
-   stop option processing when the first non-option is seen.
-   This is what Unix does.
-   This mode of operation is selected by either setting the environment
-   variable POSIXLY_CORRECT, or using `+' as the first character
-   of the list of option characters.
-
-   PERMUTE is the default.  We permute the contents of ARGV as we scan,
-   so that eventually all the non-options are at the end.  This allows options
-   to be given in any order, even with programs that were not written to
-   expect this.
-
-   RETURN_IN_ORDER is an option available to programs that were written
-   to expect options and other ARGV-elements in any order and that care about
-   the ordering of the two.  We describe each non-option ARGV-element
-   as if it were the argument of an option with character code 1.
-   Using `-' as the first character of the list of option characters
-   selects this mode of operation.
-
-   The special argument `--' forces an end of option-scanning regardless
-   of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
-   `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
-
-static enum
-{
-  REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
-} ordering;
-
-/* Value of POSIXLY_CORRECT environment variable.  */
-static char *posixly_correct;
-
-#ifdef	__GNU_LIBRARY__
-/* We want to avoid inclusion of string.h with non-GNU libraries
-   because there are many ways it can cause trouble.
-   On some systems, it contains special magic macros that don't work
-   in GCC.  */
-# include <string.h>
-# define my_index	strchr
-#else
-
-# if HAVE_STRING_H
-#  include <string.h>
-# else
-#  include <strings.h>
-# endif
-
-/* Avoid depending on library functions or files
-   whose names are inconsistent.  */
-
-#ifndef getenv
-extern char *getenv ();
-#endif
-
-static char *
-my_index (str, chr)
-     const char *str;
-     int chr;
-{
-  while (*str)
-    {
-      if (*str == chr)
-	return (char *) str;
-      str++;
-    }
-  return 0;
-}
-
-/* If using GCC, we can safely declare strlen this way.
-   If not using GCC, it is ok not to declare it.  */
-#ifdef __GNUC__
-/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
-   That was relevant to code that was here before.  */
-# if (!defined __STDC__ || !__STDC__) && !defined strlen
-/* gcc with -traditional declares the built-in strlen to return int,
-   and has done so at least since version 2.4.5. -- rms.  */
-extern int strlen (const char *);
-# endif /* not __STDC__ */
-#endif /* __GNUC__ */
-
-#endif /* not __GNU_LIBRARY__ */
-
-/* Handle permutation of arguments.  */
-
-/* Describe the part of ARGV that contains non-options that have
-   been skipped.  `first_nonopt' is the index in ARGV of the first of them;
-   `last_nonopt' is the index after the last of them.  */
-
-static int first_nonopt;
-static int last_nonopt;
-
-#ifdef _LIBC
-/* Stored original parameters.
-   XXX This is no good solution.  We should rather copy the args so
-   that we can compare them later.  But we must not use malloc(3).  */
-extern int __libc_argc;
-extern char **__libc_argv;
-
-/* Bash 2.0 gives us an environment variable containing flags
-   indicating ARGV elements that should not be considered arguments.  */
-
-# ifdef USE_NONOPTION_FLAGS
-/* Defined in getopt_init.c  */
-extern char *__getopt_nonoption_flags;
-
-static int nonoption_flags_max_len;
-static int nonoption_flags_len;
-# endif
-
-# ifdef USE_NONOPTION_FLAGS
-#  define SWAP_FLAGS(ch1, ch2) \
-  if (nonoption_flags_len > 0)						      \
-    {									      \
-      char __tmp = __getopt_nonoption_flags[ch1];			      \
-      __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2];	      \
-      __getopt_nonoption_flags[ch2] = __tmp;				      \
-    }
-# else
-#  define SWAP_FLAGS(ch1, ch2)
-# endif
-#else	/* !_LIBC */
-# define SWAP_FLAGS(ch1, ch2)
-#endif	/* _LIBC */
-
-/* Exchange two adjacent subsequences of ARGV.
-   One subsequence is elements [first_nonopt,last_nonopt)
-   which contains all the non-options that have been skipped so far.
-   The other is elements [last_nonopt,optind), which contains all
-   the options processed since those non-options were skipped.
-
-   `first_nonopt' and `last_nonopt' are relocated so that they describe
-   the new indices of the non-options in ARGV after they are moved.  */
-
-#if defined __STDC__ && __STDC__
-static void exchange (char **);
-#endif
-
-static void
-exchange (argv)
-     char **argv;
-{
-  int bottom = first_nonopt;
-  int middle = last_nonopt;
-  int top = optind;
-  char *tem;
-
-  /* Exchange the shorter segment with the far end of the longer segment.
-     That puts the shorter segment into the right place.
-     It leaves the longer segment in the right place overall,
-     but it consists of two parts that need to be swapped next.  */
-
-#if defined _LIBC && defined USE_NONOPTION_FLAGS
-  /* First make sure the handling of the `__getopt_nonoption_flags'
-     string can work normally.  Our top argument must be in the range
-     of the string.  */
-  if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
-    {
-      /* We must extend the array.  The user plays games with us and
-	 presents new arguments.  */
-      char *new_str = malloc (top + 1);
-      if (new_str == NULL)
-	nonoption_flags_len = nonoption_flags_max_len = 0;
-      else
-	{
-	  memset (__mempcpy (new_str, __getopt_nonoption_flags,
-			     nonoption_flags_max_len),
-		  '\0', top + 1 - nonoption_flags_max_len);
-	  nonoption_flags_max_len = top + 1;
-	  __getopt_nonoption_flags = new_str;
-	}
-    }
-#endif
-
-  while (top > middle && middle > bottom)
-    {
-      if (top - middle > middle - bottom)
-	{
-	  /* Bottom segment is the short one.  */
-	  int len = middle - bottom;
-	  register int i;
-
-	  /* Swap it with the top part of the top segment.  */
-	  for (i = 0; i < len; i++)
-	    {
-	      tem = argv[bottom + i];
-	      argv[bottom + i] = argv[top - (middle - bottom) + i];
-	      argv[top - (middle - bottom) + i] = tem;
-	      SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
-	    }
-	  /* Exclude the moved bottom segment from further swapping.  */
-	  top -= len;
-	}
-      else
-	{
-	  /* Top segment is the short one.  */
-	  int len = top - middle;
-	  register int i;
-
-	  /* Swap it with the bottom part of the bottom segment.  */
-	  for (i = 0; i < len; i++)
-	    {
-	      tem = argv[bottom + i];
-	      argv[bottom + i] = argv[middle + i];
-	      argv[middle + i] = tem;
-	      SWAP_FLAGS (bottom + i, middle + i);
-	    }
-	  /* Exclude the moved top segment from further swapping.  */
-	  bottom += len;
-	}
-    }
-
-  /* Update records for the slots the non-options now occupy.  */
-
-  first_nonopt += (optind - last_nonopt);
-  last_nonopt = optind;
-}
-
-/* Initialize the internal data when the first call is made.  */
-
-#if defined __STDC__ && __STDC__
-static const char *_getopt_initialize (int, char *const *, const char *);
-#endif
-static const char *
-_getopt_initialize (argc, argv, optstring)
-     int argc;
-     char *const *argv;
-     const char *optstring;
-{
-  /* Start processing options with ARGV-element 1 (since ARGV-element 0
-     is the program name); the sequence of previously skipped
-     non-option ARGV-elements is empty.  */
-
-  first_nonopt = last_nonopt = optind;
-
-  nextchar = NULL;
-
-  posixly_correct = getenv ("POSIXLY_CORRECT");
-
-  /* Determine how to handle the ordering of options and nonoptions.  */
-
-  if (optstring[0] == '-')
-    {
-      ordering = RETURN_IN_ORDER;
-      ++optstring;
-    }
-  else if (optstring[0] == '+')
-    {
-      ordering = REQUIRE_ORDER;
-      ++optstring;
-    }
-  else if (posixly_correct != NULL)
-    ordering = REQUIRE_ORDER;
-  else
-    ordering = PERMUTE;
-
-#if defined _LIBC && defined USE_NONOPTION_FLAGS
-  if (posixly_correct == NULL
-      && argc == __libc_argc && argv == __libc_argv)
-    {
-      if (nonoption_flags_max_len == 0)
-	{
-	  if (__getopt_nonoption_flags == NULL
-	      || __getopt_nonoption_flags[0] == '\0')
-	    nonoption_flags_max_len = -1;
-	  else
-	    {
-	      const char *orig_str = __getopt_nonoption_flags;
-	      int len = nonoption_flags_max_len = strlen (orig_str);
-	      if (nonoption_flags_max_len < argc)
-		nonoption_flags_max_len = argc;
-	      __getopt_nonoption_flags =
-		(char *) malloc (nonoption_flags_max_len);
-	      if (__getopt_nonoption_flags == NULL)
-		nonoption_flags_max_len = -1;
-	      else
-		memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
-			'\0', nonoption_flags_max_len - len);
-	    }
-	}
-      nonoption_flags_len = nonoption_flags_max_len;
-    }
-  else
-    nonoption_flags_len = 0;
-#endif
-
-  return optstring;
-}
-
-/* Scan elements of ARGV (whose length is ARGC) for option characters
-   given in OPTSTRING.
-
-   If an element of ARGV starts with '-', and is not exactly "-" or "--",
-   then it is an option element.  The characters of this element
-   (aside from the initial '-') are option characters.  If `getopt'
-   is called repeatedly, it returns successively each of the option characters
-   from each of the option elements.
-
-   If `getopt' finds another option character, it returns that character,
-   updating `optind' and `nextchar' so that the next call to `getopt' can
-   resume the scan with the following option character or ARGV-element.
-
-   If there are no more option characters, `getopt' returns -1.
-   Then `optind' is the index in ARGV of the first ARGV-element
-   that is not an option.  (The ARGV-elements have been permuted
-   so that those that are not options now come last.)
-
-   OPTSTRING is a string containing the legitimate option characters.
-   If an option character is seen that is not listed in OPTSTRING,
-   return '?' after printing an error message.  If you set `opterr' to
-   zero, the error message is suppressed but we still return '?'.
-
-   If a char in OPTSTRING is followed by a colon, that means it wants an arg,
-   so the following text in the same ARGV-element, or the text of the following
-   ARGV-element, is returned in `optarg'.  Two colons mean an option that
-   wants an optional arg; if there is text in the current ARGV-element,
-   it is returned in `optarg', otherwise `optarg' is set to zero.
-
-   If OPTSTRING starts with `-' or `+', it requests different methods of
-   handling the non-option ARGV-elements.
-   See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
-
-   Long-named options begin with `--' instead of `-'.
-   Their names may be abbreviated as long as the abbreviation is unique
-   or is an exact match for some defined option.  If they have an
-   argument, it follows the option name in the same ARGV-element, separated
-   from the option name by a `=', or else the in next ARGV-element.
-   When `getopt' finds a long-named option, it returns 0 if that option's
-   `flag' field is nonzero, the value of the option's `val' field
-   if the `flag' field is zero.
-
-   The elements of ARGV aren't really const, because we permute them.
-   But we pretend they're const in the prototype to be compatible
-   with other systems.
-
-   LONGOPTS is a vector of `struct option' terminated by an
-   element containing a name which is zero.
-
-   LONGIND returns the index in LONGOPT of the long-named option found.
-   It is only valid when a long-named option has been found by the most
-   recent call.
-
-   If LONG_ONLY is nonzero, '-' as well as '--' can introduce
-   long-named options.  */
-
-int
-_getopt_internal (argc, argv, optstring, longopts, longind, long_only)
-     int argc;
-     char *const *argv;
-     const char *optstring;
-     const struct option *longopts;
-     int *longind;
-     int long_only;
-{
-  int print_errors = opterr;
-  if (optstring[0] == ':')
-    print_errors = 0;
-
-  if (argc < 1)
-    return -1;
-
-  optarg = NULL;
-
-  if (optind == 0 || !__getopt_initialized)
-    {
-      if (optind == 0)
-	optind = 1;	/* Don't scan ARGV[0], the program name.  */
-      optstring = _getopt_initialize (argc, argv, optstring);
-      __getopt_initialized = 1;
-    }
-
-  /* Test whether ARGV[optind] points to a non-option argument.
-     Either it does not have option syntax, or there is an environment flag
-     from the shell indicating it is not an option.  The later information
-     is only used when the used in the GNU libc.  */
-#if defined _LIBC && defined USE_NONOPTION_FLAGS
-# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0'	      \
-		      || (optind < nonoption_flags_len			      \
-			  && __getopt_nonoption_flags[optind] == '1'))
-#else
-# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
-#endif
-
-  if (nextchar == NULL || *nextchar == '\0')
-    {
-      /* Advance to the next ARGV-element.  */
-
-      /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
-	 moved back by the user (who may also have changed the arguments).  */
-      if (last_nonopt > optind)
-	last_nonopt = optind;
-      if (first_nonopt > optind)
-	first_nonopt = optind;
-
-      if (ordering == PERMUTE)
-	{
-	  /* If we have just processed some options following some non-options,
-	     exchange them so that the options come first.  */
-
-	  if (first_nonopt != last_nonopt && last_nonopt != optind)
-	    exchange ((char **) argv);
-	  else if (last_nonopt != optind)
-	    first_nonopt = optind;
-
-	  /* Skip any additional non-options
-	     and extend the range of non-options previously skipped.  */
-
-	  while (optind < argc && NONOPTION_P)
-	    optind++;
-	  last_nonopt = optind;
-	}
-
-      /* The special ARGV-element `--' means premature end of options.
-	 Skip it like a null option,
-	 then exchange with previous non-options as if it were an option,
-	 then skip everything else like a non-option.  */
-
-      if (optind != argc && !strcmp (argv[optind], "--"))
-	{
-	  optind++;
-
-	  if (first_nonopt != last_nonopt && last_nonopt != optind)
-	    exchange ((char **) argv);
-	  else if (first_nonopt == last_nonopt)
-	    first_nonopt = optind;
-	  last_nonopt = argc;
-
-	  optind = argc;
-	}
-
-      /* If we have done all the ARGV-elements, stop the scan
-	 and back over any non-options that we skipped and permuted.  */
-
-      if (optind == argc)
-	{
-	  /* Set the next-arg-index to point at the non-options
-	     that we previously skipped, so the caller will digest them.  */
-	  if (first_nonopt != last_nonopt)
-	    optind = first_nonopt;
-	  return -1;
-	}
-
-      /* If we have come to a non-option and did not permute it,
-	 either stop the scan or describe it to the caller and pass it by.  */
-
-      if (NONOPTION_P)
-	{
-	  if (ordering == REQUIRE_ORDER)
-	    return -1;
-	  optarg = argv[optind++];
-	  return 1;
-	}
-
-      /* We have found another option-ARGV-element.
-	 Skip the initial punctuation.  */
-
-      nextchar = (argv[optind] + 1
-		  + (longopts != NULL && argv[optind][1] == '-'));
-    }
-
-  /* Decode the current option-ARGV-element.  */
-
-  /* Check whether the ARGV-element is a long option.
-
-     If long_only and the ARGV-element has the form "-f", where f is
-     a valid short option, don't consider it an abbreviated form of
-     a long option that starts with f.  Otherwise there would be no
-     way to give the -f short option.
-
-     On the other hand, if there's a long option "fubar" and
-     the ARGV-element is "-fu", do consider that an abbreviation of
-     the long option, just like "--fu", and not "-f" with arg "u".
-
-     This distinction seems to be the most useful approach.  */
-
-  if (longopts != NULL
-      && (argv[optind][1] == '-'
-	  || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
-    {
-      char *nameend;
-      const struct option *p;
-      const struct option *pfound = NULL;
-      int exact = 0;
-      int ambig = 0;
-      int indfound = -1;
-      int option_index;
-
-      for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
-	/* Do nothing.  */ ;
-
-      /* Test all long options for either exact match
-	 or abbreviated matches.  */
-      for (p = longopts, option_index = 0; p->name; p++, option_index++)
-	if (!strncmp (p->name, nextchar, nameend - nextchar))
-	  {
-	    if ((unsigned int) (nameend - nextchar)
-		== (unsigned int) strlen (p->name))
-	      {
-		/* Exact match found.  */
-		pfound = p;
-		indfound = option_index;
-		exact = 1;
-		break;
-	      }
-	    else if (pfound == NULL)
-	      {
-		/* First nonexact match found.  */
-		pfound = p;
-		indfound = option_index;
-	      }
-	    else if (long_only
-		     || pfound->has_arg != p->has_arg
-		     || pfound->flag != p->flag
-		     || pfound->val != p->val)
-	      /* Second or later nonexact match found.  */
-	      ambig = 1;
-	  }
-
-      if (ambig && !exact)
-	{
-	  if (print_errors)
-	    fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
-		     argv[0], argv[optind]);
-	  nextchar += strlen (nextchar);
-	  optind++;
-	  optopt = 0;
-	  return '?';
-	}
-
-      if (pfound != NULL)
-	{
-	  option_index = indfound;
-	  optind++;
-	  if (*nameend)
-	    {
-	      /* Don't test has_arg with >, because some C compilers don't
-		 allow it to be used on enums.  */
-	      if (pfound->has_arg)
-		optarg = nameend + 1;
-	      else
-		{
-		  if (print_errors)
-		    {
-		      if (argv[optind - 1][1] == '-')
-			/* --option */
-			fprintf (stderr,
-				 _("%s: option `--%s' doesn't allow an argument\n"),
-				 argv[0], pfound->name);
-		      else
-			/* +option or -option */
-			fprintf (stderr,
-				 _("%s: option `%c%s' doesn't allow an argument\n"),
-				 argv[0], argv[optind - 1][0], pfound->name);
-		    }
-
-		  nextchar += strlen (nextchar);
-
-		  optopt = pfound->val;
-		  return '?';
-		}
-	    }
-	  else if (pfound->has_arg == 1)
-	    {
-	      if (optind < argc)
-		optarg = argv[optind++];
-	      else
-		{
-		  if (print_errors)
-		    fprintf (stderr,
-			   _("%s: option `%s' requires an argument\n"),
-			   argv[0], argv[optind - 1]);
-		  nextchar += strlen (nextchar);
-		  optopt = pfound->val;
-		  return optstring[0] == ':' ? ':' : '?';
-		}
-	    }
-	  nextchar += strlen (nextchar);
-	  if (longind != NULL)
-	    *longind = option_index;
-	  if (pfound->flag)
-	    {
-	      *(pfound->flag) = pfound->val;
-	      return 0;
-	    }
-	  return pfound->val;
-	}
-
-      /* Can't find it as a long option.  If this is not getopt_long_only,
-	 or the option starts with '--' or is not a valid short
-	 option, then it's an error.
-	 Otherwise interpret it as a short option.  */
-      if (!long_only || argv[optind][1] == '-'
-	  || my_index (optstring, *nextchar) == NULL)
-	{
-	  if (print_errors)
-	    {
-	      if (argv[optind][1] == '-')
-		/* --option */
-		fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
-			 argv[0], nextchar);
-	      else
-		/* +option or -option */
-		fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
-			 argv[0], argv[optind][0], nextchar);
-	    }
-	  nextchar = (char *) "";
-	  optind++;
-	  optopt = 0;
-	  return '?';
-	}
-    }
-
-  /* Look at and handle the next short option-character.  */
-
-  {
-    char c = *nextchar++;
-    char *temp = my_index (optstring, c);
-
-    /* Increment `optind' when we start to process its last character.  */
-    if (*nextchar == '\0')
-      ++optind;
-
-    if (temp == NULL || c == ':')
-      {
-	if (print_errors)
-	  {
-	    if (posixly_correct)
-	      /* 1003.2 specifies the format of this message.  */
-	      fprintf (stderr, _("%s: illegal option -- %c\n"),
-		       argv[0], c);
-	    else
-	      fprintf (stderr, _("%s: invalid option -- %c\n"),
-		       argv[0], c);
-	  }
-	optopt = c;
-	return '?';
-      }
-    /* Convenience. Treat POSIX -W foo same as long option --foo */
-    if (temp[0] == 'W' && temp[1] == ';')
-      {
-	char *nameend;
-	const struct option *p;
-	const struct option *pfound = NULL;
-	int exact = 0;
-	int ambig = 0;
-	int indfound = 0;
-	int option_index;
-
-	/* This is an option that requires an argument.  */
-	if (*nextchar != '\0')
-	  {
-	    optarg = nextchar;
-	    /* If we end this ARGV-element by taking the rest as an arg,
-	       we must advance to the next element now.  */
-	    optind++;
-	  }
-	else if (optind == argc)
-	  {
-	    if (print_errors)
-	      {
-		/* 1003.2 specifies the format of this message.  */
-		fprintf (stderr, _("%s: option requires an argument -- %c\n"),
-			 argv[0], c);
-	      }
-	    optopt = c;
-	    if (optstring[0] == ':')
-	      c = ':';
-	    else
-	      c = '?';
-	    return c;
-	  }
-	else
-	  /* We already incremented `optind' once;
-	     increment it again when taking next ARGV-elt as argument.  */
-	  optarg = argv[optind++];
-
-	/* optarg is now the argument, see if it's in the
-	   table of longopts.  */
-
-	for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
-	  /* Do nothing.  */ ;
-
-	/* Test all long options for either exact match
-	   or abbreviated matches.  */
-	for (p = longopts, option_index = 0; p->name; p++, option_index++)
-	  if (!strncmp (p->name, nextchar, nameend - nextchar))
-	    {
-	      if ((unsigned int) (nameend - nextchar) == strlen (p->name))
-		{
-		  /* Exact match found.  */
-		  pfound = p;
-		  indfound = option_index;
-		  exact = 1;
-		  break;
-		}
-	      else if (pfound == NULL)
-		{
-		  /* First nonexact match found.  */
-		  pfound = p;
-		  indfound = option_index;
-		}
-	      else
-		/* Second or later nonexact match found.  */
-		ambig = 1;
-	    }
-	if (ambig && !exact)
-	  {
-	    if (print_errors)
-	      fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
-		       argv[0], argv[optind]);
-	    nextchar += strlen (nextchar);
-	    optind++;
-	    return '?';
-	  }
-	if (pfound != NULL)
-	  {
-	    option_index = indfound;
-	    if (*nameend)
-	      {
-		/* Don't test has_arg with >, because some C compilers don't
-		   allow it to be used on enums.  */
-		if (pfound->has_arg)
-		  optarg = nameend + 1;
-		else
-		  {
-		    if (print_errors)
-		      fprintf (stderr, _("\
-%s: option `-W %s' doesn't allow an argument\n"),
-			       argv[0], pfound->name);
-
-		    nextchar += strlen (nextchar);
-		    return '?';
-		  }
-	      }
-	    else if (pfound->has_arg == 1)
-	      {
-		if (optind < argc)
-		  optarg = argv[optind++];
-		else
-		  {
-		    if (print_errors)
-		      fprintf (stderr,
-			       _("%s: option `%s' requires an argument\n"),
-			       argv[0], argv[optind - 1]);
-		    nextchar += strlen (nextchar);
-		    return optstring[0] == ':' ? ':' : '?';
-		  }
-	      }
-	    nextchar += strlen (nextchar);
-	    if (longind != NULL)
-	      *longind = option_index;
-	    if (pfound->flag)
-	      {
-		*(pfound->flag) = pfound->val;
-		return 0;
-	      }
-	    return pfound->val;
-	  }
-	  nextchar = NULL;
-	  return 'W';	/* Let the application handle it.   */
-      }
-    if (temp[1] == ':')
-      {
-	if (temp[2] == ':')
-	  {
-	    /* This is an option that accepts an argument optionally.  */
-	    if (*nextchar != '\0')
-	      {
-		optarg = nextchar;
-		optind++;
-	      }
-	    else
-	      optarg = NULL;
-	    nextchar = NULL;
-	  }
-	else
-	  {
-	    /* This is an option that requires an argument.  */
-	    if (*nextchar != '\0')
-	      {
-		optarg = nextchar;
-		/* If we end this ARGV-element by taking the rest as an arg,
-		   we must advance to the next element now.  */
-		optind++;
-	      }
-	    else if (optind == argc)
-	      {
-		if (print_errors)
-		  {
-		    /* 1003.2 specifies the format of this message.  */
-		    fprintf (stderr,
-			     _("%s: option requires an argument -- %c\n"),
-			     argv[0], c);
-		  }
-		optopt = c;
-		if (optstring[0] == ':')
-		  c = ':';
-		else
-		  c = '?';
-	      }
-	    else
-	      /* We already incremented `optind' once;
-		 increment it again when taking next ARGV-elt as argument.  */
-	      optarg = argv[optind++];
-	    nextchar = NULL;
-	  }
-      }
-    return c;
-  }
-}
-
-int
-getopt (argc, argv, optstring)
-     int argc;
-     char *const *argv;
-     const char *optstring;
-{
-  return _getopt_internal (argc, argv, optstring,
-			   (const struct option *) 0,
-			   (int *) 0,
-			   0);
-}
-
-#endif	/* Not ELIDE_CODE.  */
-
-#ifdef TEST
-
-/* Compile with -DTEST to make an executable for use in testing
-   the above definition of `getopt'.  */
-
-int
-main (argc, argv)
-     int argc;
-     char **argv;
-{
-  int c;
-  int digit_optind = 0;
-
-  while (1)
-    {
-      int this_option_optind = optind ? optind : 1;
-
-      c = getopt (argc, argv, "abc:d:0123456789");
-      if (c == -1)
-	break;
-
-      switch (c)
-	{
-	case '0':
-	case '1':
-	case '2':
-	case '3':
-	case '4':
-	case '5':
-	case '6':
-	case '7':
-	case '8':
-	case '9':
-	  if (digit_optind != 0 && digit_optind != this_option_optind)
-	    printf ("digits occur in two different argv-elements.\n");
-	  digit_optind = this_option_optind;
-	  printf ("option %c\n", c);
-	  break;
-
-	case 'a':
-	  printf ("option a\n");
-	  break;
-
-	case 'b':
-	  printf ("option b\n");
-	  break;
-
-	case 'c':
-	  printf ("option c with value `%s'\n", optarg);
-	  break;
-
-	case '?':
-	  break;
-
-	default:
-	  printf ("?? getopt returned character code 0%o ??\n", c);
-	}
-    }
-
-  if (optind < argc)
-    {
-      printf ("non-option ARGV-elements: ");
-      while (optind < argc)
-	printf ("%s ", argv[optind++]);
-      printf ("\n");
-    }
-
-  exit (0);
-}
-
-#endif /* TEST */
diff --git a/ggsn/getopt1.c b/ggsn/getopt1.c
deleted file mode 100644
index 22a7efb..0000000
--- a/ggsn/getopt1.c
+++ /dev/null
@@ -1,188 +0,0 @@
-/* getopt_long and getopt_long_only entry points for GNU getopt.
-   Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98
-     Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library 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
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include "getopt.h"
-
-#if !defined __STDC__ || !__STDC__
-/* This is a separate conditional since some stdc systems
-   reject `defined (const)'.  */
-#ifndef const
-#define const
-#endif
-#endif
-
-#include <stdio.h>
-
-/* Comment out all this code if we are using the GNU C Library, and are not
-   actually compiling the library itself.  This code is part of the GNU C
-   Library, but also included in many other GNU distributions.  Compiling
-   and linking in this code is a waste when using the GNU C library
-   (especially if it is a shared library).  Rather than having every GNU
-   program understand `configure --with-gnu-libc' and omit the object files,
-   it is simpler to just do this in the source for each such file.  */
-
-#define GETOPT_INTERFACE_VERSION 2
-#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
-#include <gnu-versions.h>
-#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
-#define ELIDE_CODE
-#endif
-#endif
-
-#ifndef ELIDE_CODE
-
-
-/* This needs to come after some library #include
-   to get __GNU_LIBRARY__ defined.  */
-#ifdef __GNU_LIBRARY__
-#include <stdlib.h>
-#endif
-
-#ifndef	NULL
-#define NULL 0
-#endif
-
-int
-getopt_long (argc, argv, options, long_options, opt_index)
-     int argc;
-     char *const *argv;
-     const char *options;
-     const struct option *long_options;
-     int *opt_index;
-{
-  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
-}
-
-/* Like getopt_long, but '-' as well as '--' can indicate a long option.
-   If an option that starts with '-' (not '--') doesn't match a long option,
-   but does match a short option, it is parsed as a short option
-   instead.  */
-
-int
-getopt_long_only (argc, argv, options, long_options, opt_index)
-     int argc;
-     char *const *argv;
-     const char *options;
-     const struct option *long_options;
-     int *opt_index;
-{
-  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
-}
-
-
-#endif	/* Not ELIDE_CODE.  */
-
-#ifdef TEST
-
-#include <stdio.h>
-
-int
-main (argc, argv)
-     int argc;
-     char **argv;
-{
-  int c;
-  int digit_optind = 0;
-
-  while (1)
-    {
-      int this_option_optind = optind ? optind : 1;
-      int option_index = 0;
-      static struct option long_options[] =
-      {
-	{"add", 1, 0, 0},
-	{"append", 0, 0, 0},
-	{"delete", 1, 0, 0},
-	{"verbose", 0, 0, 0},
-	{"create", 0, 0, 0},
-	{"file", 1, 0, 0},
-	{0, 0, 0, 0}
-      };
-
-      c = getopt_long (argc, argv, "abc:d:0123456789",
-		       long_options, &option_index);
-      if (c == -1)
-	break;
-
-      switch (c)
-	{
-	case 0:
-	  printf ("option %s", long_options[option_index].name);
-	  if (optarg)
-	    printf (" with arg %s", optarg);
-	  printf ("\n");
-	  break;
-
-	case '0':
-	case '1':
-	case '2':
-	case '3':
-	case '4':
-	case '5':
-	case '6':
-	case '7':
-	case '8':
-	case '9':
-	  if (digit_optind != 0 && digit_optind != this_option_optind)
-	    printf ("digits occur in two different argv-elements.\n");
-	  digit_optind = this_option_optind;
-	  printf ("option %c\n", c);
-	  break;
-
-	case 'a':
-	  printf ("option a\n");
-	  break;
-
-	case 'b':
-	  printf ("option b\n");
-	  break;
-
-	case 'c':
-	  printf ("option c with value `%s'\n", optarg);
-	  break;
-
-	case 'd':
-	  printf ("option d with value `%s'\n", optarg);
-	  break;
-
-	case '?':
-	  break;
-
-	default:
-	  printf ("?? getopt returned character code 0%o ??\n", c);
-	}
-    }
-
-  if (optind < argc)
-    {
-      printf ("non-option ARGV-elements: ");
-      while (optind < argc)
-	printf ("%s ", argv[optind++]);
-      printf ("\n");
-    }
-
-  exit (0);
-}
-
-#endif /* TEST */
diff --git a/ggsn/ggsn.c b/ggsn/ggsn.c
index 8b71884..57116ce 100644
--- a/ggsn/ggsn.c
+++ b/ggsn/ggsn.c
@@ -47,9 +47,9 @@
 
 #include <time.h>
 
-#include "tun.h"
-#include "ippool.h"
-#include "syserr.h"
+#include "../lib/tun.h"
+#include "../lib/ippool.h"
+#include "../lib/syserr.h"
 #include "../gtp/pdp.h"
 #include "../gtp/gtp.h"
 #include "cmdline.h"
diff --git a/ggsn/gnugetopt.h b/ggsn/gnugetopt.h
deleted file mode 100644
index a1b8dd6..0000000
--- a/ggsn/gnugetopt.h
+++ /dev/null
@@ -1,180 +0,0 @@
-/* Declarations for getopt.
-   Copyright (C) 1989-1994, 1996-1999, 2001 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library 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
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#ifndef _GETOPT_H
-
-#ifndef __need_getopt
-# define _GETOPT_H 1
-#endif
-
-/* If __GNU_LIBRARY__ is not already defined, either we are being used
-   standalone, or this is the first header included in the source file.
-   If we are being used with glibc, we need to include <features.h>, but
-   that does not exist if we are standalone.  So: if __GNU_LIBRARY__ is
-   not defined, include <ctype.h>, which will pull in <features.h> for us
-   if it's from glibc.  (Why ctype.h?  It's guaranteed to exist and it
-   doesn't flood the namespace with stuff the way some other headers do.)  */
-#if !defined __GNU_LIBRARY__
-# include <ctype.h>
-#endif
-
-#ifdef	__cplusplus
-extern "C" {
-#endif
-
-/* For communication from `getopt' to the caller.
-   When `getopt' finds an option that takes an argument,
-   the argument value is returned here.
-   Also, when `ordering' is RETURN_IN_ORDER,
-   each non-option ARGV-element is returned here.  */
-
-extern char *optarg;
-
-/* Index in ARGV of the next element to be scanned.
-   This is used for communication to and from the caller
-   and for communication between successive calls to `getopt'.
-
-   On entry to `getopt', zero means this is the first call; initialize.
-
-   When `getopt' returns -1, this is the index of the first of the
-   non-option elements that the caller should itself scan.
-
-   Otherwise, `optind' communicates from one call to the next
-   how much of ARGV has been scanned so far.  */
-
-extern int optind;
-
-/* Callers store zero here to inhibit the error message `getopt' prints
-   for unrecognized options.  */
-
-extern int opterr;
-
-/* Set to an option character which was unrecognized.  */
-
-extern int optopt;
-
-#ifndef __need_getopt
-/* Describe the long-named options requested by the application.
-   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
-   of `struct option' terminated by an element containing a name which is
-   zero.
-
-   The field `has_arg' is:
-   no_argument		(or 0) if the option does not take an argument,
-   required_argument	(or 1) if the option requires an argument,
-   optional_argument 	(or 2) if the option takes an optional argument.
-
-   If the field `flag' is not NULL, it points to a variable that is set
-   to the value given in the field `val' when the option is found, but
-   left unchanged if the option is not found.
-
-   To have a long-named option do something other than set an `int' to
-   a compiled-in constant, such as set a value from `optarg', set the
-   option's `flag' field to zero and its `val' field to a nonzero
-   value (the equivalent single-letter option character, if there is
-   one).  For long options that have a zero `flag' field, `getopt'
-   returns the contents of the `val' field.  */
-
-struct option
-{
-# if (defined __STDC__ && __STDC__) || defined __cplusplus
-  const char *name;
-# else
-  char *name;
-# endif
-  /* has_arg can't be an enum because some compilers complain about
-     type mismatches in all the code that assumes it is an int.  */
-  int has_arg;
-  int *flag;
-  int val;
-};
-
-/* Names for the values of the `has_arg' field of `struct option'.  */
-
-# define no_argument		0
-# define required_argument	1
-# define optional_argument	2
-#endif	/* need getopt */
-
-
-/* Get definitions and prototypes for functions to process the
-   arguments in ARGV (ARGC of them, minus the program name) for
-   options given in OPTS.
-
-   Return the option character from OPTS just read.  Return -1 when
-   there are no more options.  For unrecognized options, or options
-   missing arguments, `optopt' is set to the option letter, and '?' is
-   returned.
-
-   The OPTS string is a list of characters which are recognized option
-   letters, optionally followed by colons, specifying that that letter
-   takes an argument, to be placed in `optarg'.
-
-   If a letter in OPTS is followed by two colons, its argument is
-   optional.  This behavior is specific to the GNU `getopt'.
-
-   The argument `--' causes premature termination of argument
-   scanning, explicitly telling `getopt' that there are no more
-   options.
-
-   If OPTS begins with `--', then non-option arguments are treated as
-   arguments to the option '\0'.  This behavior is specific to the GNU
-   `getopt'.  */
-
-#if (defined __STDC__ && __STDC__) || defined __cplusplus
-# ifdef __GNU_LIBRARY__
-/* Many other libraries have conflicting prototypes for getopt, with
-   differences in the consts, in stdlib.h.  To avoid compilation
-   errors, only prototype getopt for the GNU C library.  */
-extern int getopt (int __argc, char *const *__argv, const char *__shortopts);
-# else /* not __GNU_LIBRARY__ */
-extern int getopt ();
-# endif /* __GNU_LIBRARY__ */
-
-# ifndef __need_getopt
-extern int getopt_long (int __argc, char *const *__argv, const char *__shortopts,
-		        const struct option *__longopts, int *__longind);
-extern int getopt_long_only (int __argc, char *const *__argv,
-			     const char *__shortopts,
-		             const struct option *__longopts, int *__longind);
-
-/* Internal only.  Users should not call this directly.  */
-extern int _getopt_internal (int __argc, char *const *__argv,
-			     const char *__shortopts,
-		             const struct option *__longopts, int *__longind,
-			     int __long_only);
-# endif
-#else /* not __STDC__ */
-extern int getopt ();
-# ifndef __need_getopt
-extern int getopt_long ();
-extern int getopt_long_only ();
-
-extern int _getopt_internal ();
-# endif
-#endif /* __STDC__ */
-
-#ifdef	__cplusplus
-}
-#endif
-
-/* Make sure we later can get all the definitions and declarations.  */
-#undef __need_getopt
-
-#endif /* getopt.h */
diff --git a/ggsn/ippool.c b/ggsn/ippool.c
deleted file mode 100644
index fa3d8af..0000000
--- a/ggsn/ippool.c
+++ /dev/null
@@ -1,526 +0,0 @@
-/*
- * IP address pool functions.
- * Copyright (C) 2003, 2004 Mondru AB.
- *
- * The contents of this file may be used under the terms of the GNU
- * General Public License Version 2, provided that the above copyright
- * notice and this permission notice is included in all copies or
- * substantial portions of the software.
- * 
- */
-
-#include <sys/types.h>
-#include <netinet/in.h> /* in_addr */
-#include <stdlib.h>     /* calloc */
-#include <stdio.h>      /* sscanf */
-#include <syslog.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <arpa/inet.h>
-#include "syserr.h"
-#include "ippool.h"
-#include "lookup.h"
-
-
-int ippool_printaddr(struct ippool_t *this) {
-  unsigned int n;
-  printf("ippool_printaddr\n");
-  printf("Firstdyn %d\n", this->firstdyn - this->member);
-  printf("Lastdyn %d\n",  this->lastdyn - this->member);
-  printf("Firststat %d\n", this->firststat - this->member);
-  printf("Laststat %d\n",  this->laststat - this->member);
-  printf("Listsize %d\n",  this->listsize);
-
-  for (n=0; n<this->listsize; n++) {
-    printf("Unit %d inuse %d prev %d next %d addr %s %x\n", 
-	   n,
-	   this->member[n].inuse,
-	   this->member[n].prev - this->member,
-	   this->member[n].next - this->member,
-	   inet_ntoa(this->member[n].addr),	
-	   this->member[n].addr.s_addr
-	   );
-  }
-  return 0;
-}
-
-int ippool_hashadd(struct ippool_t *this, struct ippoolm_t *member) {
-  uint32_t hash;
-  struct ippoolm_t *p;
-  struct ippoolm_t *p_prev = NULL; 
-
-  /* Insert into hash table */
-  hash = ippool_hash4(&member->addr) & this->hashmask;
-  for (p = this->hash[hash]; p; p = p->nexthash)
-    p_prev = p;
-  if (!p_prev)
-    this->hash[hash] = member;
-  else 
-    p_prev->nexthash = member;
-  return 0; /* Always OK to insert */
-}
-
-int ippool_hashdel(struct ippool_t *this, struct ippoolm_t *member) {
-  uint32_t hash;
-  struct ippoolm_t *p;
-  struct ippoolm_t *p_prev = NULL; 
-
-  /* Find in hash table */
-  hash = ippool_hash4(&member->addr) & this->hashmask;
-  for (p = this->hash[hash]; p; p = p->nexthash) {
-    if (p == member) {
-      break;
-    }
-    p_prev = p;
-  }
-
-  if (p!= member) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0,
-	    "ippool_hashdel: Tried to delete member not in hash table");
-    return -1;
-  }
-
-  if (!p_prev)
-    this->hash[hash] = p->nexthash;
-  else
-    p_prev->nexthash = p->nexthash;
-
-  return 0;
-}
-
-
-unsigned long int ippool_hash4(struct in_addr *addr) {
-  return lookup((unsigned char*) &addr->s_addr, sizeof(addr->s_addr), 0);
-}
-
-#ifndef IPPOOL_NOIP6
-unsigned long int ippool_hash6(struct in6_addr *addr) {
-  return lookup((unsigned char*) addr->u6_addr8, sizeof(addr->u6_addr8), 0);
-}
-#endif
-
-
-/* Get IP address and mask */
-int ippool_aton(struct in_addr *addr, struct in_addr *mask,
-		char *pool, int number) {
-
-  /* Parse only first instance of network for now */
-  /* Eventually "number" will indicate the token which we want to parse */
-
-  unsigned int a1, a2, a3, a4;
-  unsigned int m1, m2, m3, m4;
-  int c;
-  int m;
-  int masklog;
-
-  c = sscanf(pool, "%u.%u.%u.%u/%u.%u.%u.%u",
-	     &a1, &a2, &a3, &a4,
-	     &m1, &m2, &m3, &m4);
-  switch (c) {
-  case 4:
-    mask->s_addr = 0xffffffff;
-    break;
-  case 5:
-    if (m1 > 32) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Invalid mask");
-      return -1; /* Invalid mask */
-    }
-    mask->s_addr = htonl(0xffffffff << (32 - m1));
-    break;
-  case 8:
-    if (m1 >= 256 ||  m2 >= 256 || m3 >= 256 || m4 >= 256) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Invalid mask");
-      return -1; /* Wrong mask format */
-    }
-    m = m1 * 0x1000000 + m2 * 0x10000 + m3 * 0x100 + m4;
-    for (masklog = 0; ((1 << masklog) < ((~m)+1)); masklog++);
-    if (((~m)+1) != (1 << masklog)) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Invalid mask");
-      return -1; /* Wrong mask format (not all ones followed by all zeros)*/
-    }
-    mask->s_addr = htonl(m);
-    break;
-  default:
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Invalid mask");
-    return -1; /* Invalid mask */
-  }
-
-  if (a1 >= 256 ||  a2 >= 256 || a3 >= 256 || a4 >= 256) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Wrong IP address format");
-    return -1;
-  }
-  else
-    addr->s_addr = htonl(a1 * 0x1000000 + a2 * 0x10000 + a3 * 0x100 + a4);
-
-  return 0;
-}
-
-/* Create new address pool */
-int ippool_new(struct ippool_t **this, char *dyn,  char *stat, 
-	       int allowdyn, int allowstat, int flags) {
-
-  /* Parse only first instance of pool for now */
-
-  int i;
-  struct in_addr addr;
-  struct in_addr mask;
-  struct in_addr stataddr;
-  struct in_addr statmask;
-  unsigned int m;
-  int listsize;
-  int dynsize;
-  unsigned int statsize;
-
-  if (!allowdyn) {
-    dynsize = 0;
-  }
-  else {
-    if (ippool_aton(&addr, &mask, dyn, 0)) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0, 
-	      "Failed to parse dynamic pool");
-      return -1;
-    }
-
-    /* Set IPPOOL_NONETWORK if IPPOOL_NOGATEWAY is set */
-    if (flags & IPPOOL_NOGATEWAY) {   
-      flags |= IPPOOL_NONETWORK;
-    }
-    
-    m = ntohl(mask.s_addr);
-    dynsize = ((~m)+1);
-    if (flags & IPPOOL_NONETWORK)   /* Exclude network address from pool */
-      dynsize--;
-    if (flags & IPPOOL_NOGATEWAY)   /* Exclude gateway address from pool */
-      dynsize--;
-    if (flags & IPPOOL_NOBROADCAST) /* Exclude broadcast address from pool */
-      dynsize--;
-  }
-
-  if (!allowstat) {
-    statsize = 0;
-    stataddr.s_addr = 0;
-    statmask.s_addr = 0;
-  }
-  else {
-    if (ippool_aton(&stataddr, &statmask, stat, 0)) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0,
-	      "Failed to parse static range");
-      return -1;
-    }
-
-    m = ntohl(statmask.s_addr);
-    statsize = ((~m)+1);
-    if (statsize > IPPOOL_STATSIZE) statsize = IPPOOL_STATSIZE;
-  }
-
-  listsize = dynsize + statsize; /* Allocate space for static IP addresses */
-
-  if (!(*this = calloc(sizeof(struct ippool_t), 1))) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0,
-	    "Failed to allocate memory for ippool");
-    return -1;
-  }
-  
-  (*this)->allowdyn  = allowdyn;
-  (*this)->allowstat = allowstat;
-  (*this)->stataddr  = stataddr;
-  (*this)->statmask  = statmask;
-
-  (*this)->listsize += listsize;
-  if (!((*this)->member = calloc(sizeof(struct ippoolm_t), listsize))){
-        sys_err(LOG_ERR, __FILE__, __LINE__, 0,
-		"Failed to allocate memory for members in ippool");
-    return -1;
-  }
-  
-  for ((*this)->hashlog = 0; 
-       ((1 << (*this)->hashlog) < listsize);
-       (*this)->hashlog++);
-
-  /*   printf ("Hashlog %d %d %d\n", (*this)->hashlog, listsize, (1 << (*this)->hashlog)); */
-
-  /* Determine hashsize */
-  (*this)->hashsize = 1 << (*this)->hashlog; /* Fails if mask=0: All Internet*/
-  (*this)->hashmask = (*this)->hashsize -1;
-  
-  /* Allocate hash table */
-  if (!((*this)->hash = calloc(sizeof(struct ippoolm_t), (*this)->hashsize))){
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0,
-	    "Failed to allocate memory for hash members in ippool");
-    return -1;
-  }
-  
-  (*this)->firstdyn = NULL;
-  (*this)->lastdyn = NULL;
-  for (i = 0; i<dynsize; i++) {
-
-    if (flags & IPPOOL_NOGATEWAY)
-      (*this)->member[i].addr.s_addr = htonl(ntohl(addr.s_addr) + i + 2);
-    else if (flags & IPPOOL_NONETWORK)
-      (*this)->member[i].addr.s_addr = htonl(ntohl(addr.s_addr) + i + 1);
-    else
-      (*this)->member[i].addr.s_addr = htonl(ntohl(addr.s_addr) + i);
-    
-    (*this)->member[i].inuse = 0;
-
-    /* Insert into list of unused */
-    (*this)->member[i].prev = (*this)->lastdyn;
-    if ((*this)->lastdyn) {
-      (*this)->lastdyn->next = &((*this)->member[i]);
-    }
-    else {
-      (*this)->firstdyn = &((*this)->member[i]);
-    }
-    (*this)->lastdyn = &((*this)->member[i]);
-    (*this)->member[i].next = NULL; /* Redundant */
-
-    ( void)ippool_hashadd(*this, &(*this)->member[i]);
-  }
-
-  (*this)->firststat = NULL;
-  (*this)->laststat = NULL;
-  for (i = dynsize; i<listsize; i++) {
-
-    (*this)->member[i].addr.s_addr = 0;
-    (*this)->member[i].inuse = 0;
-
-    /* Insert into list of unused */
-    (*this)->member[i].prev = (*this)->laststat;
-    if ((*this)->laststat) {
-      (*this)->laststat->next = &((*this)->member[i]);
-    }
-    else {
-      (*this)->firststat = &((*this)->member[i]);
-    }
-    (*this)->laststat = &((*this)->member[i]);
-    (*this)->member[i].next = NULL; /* Redundant */
-  }
-
-  if (0) (void)ippool_printaddr(*this);
-  return 0;
-}
-
-
-
-/* Delete existing address pool */
-int ippool_free(struct ippool_t *this) {
-  free(this->hash);
-  free(this->member);
-  free(this);
-  return 0; /* Always OK */
-}
-
-/* Find an IP address in the pool */
-int ippool_getip(struct ippool_t *this, struct ippoolm_t **member,
-		 struct in_addr *addr) {
-  struct ippoolm_t *p;
-  uint32_t hash;
-
-  /* Find in hash table */
-  hash = ippool_hash4(addr) & this->hashmask;
-  for (p = this->hash[hash]; p; p = p->nexthash) {
-    if ((p->addr.s_addr == addr->s_addr) && (p->inuse)) {
-      if (member) *member = p;
-      return 0;
-    }
-  }
-  if (member) *member = NULL;
-  /*sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Address could not be found");*/
-  return -1;
-}
-
-/**
- * ippool_newip
- * Get an IP address. If addr = 0.0.0.0 get a dynamic IP address. Otherwise
- * check to see if the given address is available. If available within
- * dynamic address space allocate it there, otherwise allocate within static
- * address space.
-**/
-int ippool_newip(struct ippool_t *this, struct ippoolm_t **member,
-		 struct in_addr *addr, int statip) {
-  struct ippoolm_t *p;
-  struct ippoolm_t *p2 = NULL;
-  uint32_t hash;
-
-  /* If static:
-   *   Look in dynaddr. 
-   *     If found remove from firstdyn/lastdyn linked list.
-   *   Else allocate from stataddr.
-   *    Remove from firststat/laststat linked list.
-   *    Insert into hash table.
-   *
-   * If dynamic
-   *   Remove from firstdyn/lastdyn linked list.
-   *
-   */
-
-  if (0) (void)ippool_printaddr(this);
-
-  /* First check to see if this type of address is allowed */
-  if ((addr) && (addr->s_addr) && statip) { /* IP address given */
-    if (!this->allowstat) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Static IP address not allowed");
-      return -1;
-    }
-    if ((addr->s_addr & this->statmask.s_addr) != this->stataddr.s_addr) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Static out of range");
-      return -1;
-    }
-  }
-  else {
-    if (!this->allowdyn) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0, 
-	      "Dynamic IP address not allowed");
-      return -1; 
-    }
-  }
-
-  /* If IP address given try to find it in dynamic address pool */
-  if ((addr) && (addr->s_addr)) { /* IP address given */
-    /* Find in hash table */
-    hash = ippool_hash4(addr) & this->hashmask;
-    for (p = this->hash[hash]; p; p = p->nexthash) {
-      if ((p->addr.s_addr == addr->s_addr)) {
-	p2 = p;
-	break;
-      }
-    }
-  }
-
-  /* If IP was already allocated we can not use it */
-  if ((!statip) && (p2) && (p2->inuse)) {
-    p2 = NULL; 
-  }
-
-  /* If not found yet and dynamic IP then allocate dynamic IP */
-  if ((!p2) && (!statip)) {
-    if (!this ->firstdyn) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0, 
-	      "No more IP addresses available");
-      return -1;
-    }
-    else
-      p2 = this ->firstdyn;
-  }
-  
-  if (p2) { /* Was allocated from dynamic address pool */
-    if (p2->inuse) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0, 
-	      "IP address allready in use");
-      return -1; /* Allready in use / Should not happen */
-    }
-
-    /* Remove from linked list of free dynamic addresses */
-    if (p2->prev) 
-      p2->prev->next = p2->next;
-    else
-      this->firstdyn = p2->next;
-    if (p2->next) 
-      p2->next->prev = p2->prev;
-    else
-      this->lastdyn = p2->prev;
-    p2->next = NULL;
-    p2->prev = NULL;
-    p2->inuse = 1; /* Dynamic address in use */
-    
-    *member = p2;
-    if (0) (void)ippool_printaddr(this);
-    return 0; /* Success */
-  }
-
-  /* It was not possible to allocate from dynamic address pool */
-  /* Try to allocate from static address space */
-
-  if ((addr) && (addr->s_addr) && (statip)) { /* IP address given */
-    if (!this->firststat) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, 0, 
-	      "No more IP addresses available");
-      return -1; /* No more available */
-    }
-    else
-      p2 = this ->firststat;
-
-    /* Remove from linked list of free static addresses */
-    if (p2->prev) 
-      p2->prev->next = p2->next;
-    else
-      this->firststat = p2->next;
-    if (p2->next) 
-      p2->next->prev = p2->prev;
-    else
-      this->laststat = p2->prev;
-    p2->next = NULL;
-    p2->prev = NULL;
-    p2->inuse = 2; /* Static address in use */
-    memcpy(&p2->addr, addr, sizeof(addr));
-    *member = p2;
-    (void)ippool_hashadd(this, *member);
-    if (0) (void)ippool_printaddr(this);
-    return 0; /* Success */
-  }
-
-  sys_err(LOG_ERR, __FILE__, __LINE__, 0, 
-	  "Could not allocate IP address");
-  return -1; /* Should never get here. TODO: Bad code */
-}
-
-
-int ippool_freeip(struct ippool_t *this, struct ippoolm_t *member) {
-  
-  if (0) (void)ippool_printaddr(this);
-
-  if (!member->inuse) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Address not in use");
-    return -1; /* Not in use: Should not happen */
-  }
-
-  switch (member->inuse) {
-  case 0: /* Not in use: Should not happen */
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Address not in use");
-    return -1;
-  case 1: /* Allocated from dynamic address space */
-    /* Insert into list of unused */
-    member->prev = this->lastdyn;
-    if (this->lastdyn) {
-      this->lastdyn->next = member;
-    }
-    else {
-      this->firstdyn = member;
-    }
-    this->lastdyn = member;
-    
-    member->inuse = 0;
-    member->peer = NULL;
-    if (0) (void)ippool_printaddr(this);
-    return 0;
-  case 2: /* Allocated from static address space */
-    if (ippool_hashdel(this, member))
-      return -1;
-    /* Insert into list of unused */
-    member->prev = this->laststat;
-    if (this->laststat) {
-      this->laststat->next = member;
-    }
-    else {
-      this->firststat = member;
-    }
-    this->laststat = member;
-    
-    member->inuse = 0;
-    member->addr.s_addr = 0;
-    member->peer = NULL;
-    member->nexthash = NULL;
-    if (0) (void)ippool_printaddr(this);
-    return 0;
-  default: /* Should not happen */
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0, "Could not free IP address");
-    return -1;
-  }
-}
-
-
-#ifndef IPPOOL_NOIP6
-extern unsigned long int ippool_hash6(struct in6_addr *addr);
-extern int ippool_getip6(struct ippool_t *this, struct in6_addr *addr);
-extern int ippool_returnip6(struct ippool_t *this, struct in6_addr *addr);
-#endif
diff --git a/ggsn/ippool.h b/ggsn/ippool.h
deleted file mode 100644
index 02691a6..0000000
--- a/ggsn/ippool.h
+++ /dev/null
@@ -1,105 +0,0 @@
-/* 
- * IP address pool functions.
- * Copyright (C) 2003, 2004 Mondru AB.
- * 
- * The contents of this file may be used under the terms of the GNU
- * General Public License Version 2, provided that the above copyright
- * notice and this permission notice is included in all copies or
- * substantial portions of the software.
- * 
- */
-
-#ifndef _IPPOOL_H
-#define _IPPOOL_H
-
-/* Assuming that the address space is fragmented we need a hash table
-   in order to return the addresses.
-
-   The list pool should provide for both IPv4 and IPv6 addresses.
-
-   When initialising a new address pool it should be possible to pass
-   a string of CIDR format networks: "10.0.0.0/24 10.15.0.0/20" would
-   translate to 256 addresses starting at 10.0.0.0 and 1024 addresses
-   starting at 10.15.0.0. 
-
-   The above also applies to IPv6 which can be specified as described
-   in RFC2373.
-*/
-
-#define IPPOOL_NOIP6
-
-#define IPPOOL_NONETWORK   0x01
-#define IPPOOL_NOBROADCAST 0x02
-#define IPPOOL_NOGATEWAY   0x04
-
-#define IPPOOL_STATSIZE 0x10000
-
-struct ippoolm_t;                /* Forward declaration */
-
-struct ippool_t {
-  unsigned int listsize;                  /* Total number of addresses */
-  int allowdyn;                  /* Allow dynamic IP address allocation */
-  int allowstat;                 /* Allow static IP address allocation */
-  struct in_addr stataddr;       /* Static address range network address */
-  struct in_addr statmask;       /* Static address range network mask */
-  struct ippoolm_t *member;      /* Listsize array of members */
-  unsigned int hashsize;                  /* Size of hash table */
-  int hashlog;                   /* Log2 size of hash table */
-  int hashmask;                  /* Bitmask for calculating hash */
-  struct ippoolm_t **hash;       /* Hashsize array of pointer to member */
-  struct ippoolm_t *firstdyn;    /* Pointer to first free dynamic member */
-  struct ippoolm_t *lastdyn;     /* Pointer to last free dynamic member */
-  struct ippoolm_t *firststat;   /* Pointer to first free static member */
-  struct ippoolm_t *laststat;    /* Pointer to last free static member */
-};
-
-struct ippoolm_t {
-#ifndef IPPOOL_NOIP6
-  struct in6_addr addr;          /* IP address of this member */
-#else
-  struct in_addr addr;           /* IP address of this member */
-#endif
-  int inuse;                     /* 0=available; 1= dynamic; 2 = static */
-  struct ippoolm_t *nexthash;    /* Linked list part of hash table */
-  struct ippoolm_t *prev, *next; /* Linked list of free dynamic or static */
-  void *peer;                    /* Pointer to peer protocol handler */
-};
-
-/* The above structures require approximately 20+4 = 24 bytes for
-   each address (IPv4). For IPv6 the corresponding value is 32+4 = 36
-   bytes for each address. */
-
-/* Hash an IP address using code based on Bob Jenkins lookupa */
-extern unsigned long int ippool_hash4(struct in_addr *addr);
-
-/* Create new address pool */
-extern int ippool_new(struct ippool_t **this, char *dyn,  char *stat, 
-		      int allowdyn, int allowstat, int flags);
-
-/* Delete existing address pool */
-extern int ippool_free(struct ippool_t *this);
-
-/* Find an IP address in the pool */
-extern int ippool_getip(struct ippool_t *this, struct ippoolm_t **member,
-		 struct in_addr *addr);
-
-/* Get an IP address. If addr = 0.0.0.0 get a dynamic IP address. Otherwise
-   check to see if the given address is available */
-extern int ippool_newip(struct ippool_t *this, struct ippoolm_t **member,
-			struct in_addr *addr, int statip);
-
-/* Return a previously allocated IP address */
-extern int ippool_freeip(struct ippool_t *this, struct ippoolm_t *member);
-
-/* Get net and mask based on ascii string */
-extern int ippool_aton(struct in_addr *addr, struct in_addr *mask,
-		       char *pool, int number);
-
-
-#ifndef IPPOOL_NOIP6
-extern unsigned long int ippool_hash6(struct in6_addr *addr);
-extern int ippool_getip6(struct ippool_t *this, struct in6_addr *addr);
-extern int ippool_returnip6(struct ippool_t *this, struct in6_addr *addr);
-#endif
-
-#endif	/* !_IPPOOL_H */
diff --git a/ggsn/lookup.c b/ggsn/lookup.c
deleted file mode 100755
index 02e2491..0000000
--- a/ggsn/lookup.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/* 
- * Hash lookup function.
- * Copyright (C) 2003, 2004 Mondru AB.
- * 
- * The contents of this file may be used under the terms of the GNU
- * General Public License Version 2, provided that the above copyright
- * notice and this permission notice is included in all copies or
- * substantial portions of the software.
- * 
- */
-
-/**
- * lookup()
- * Generates a 32 bit hash.
- * Based on public domain code by Bob Jenkins
- * It should be one of the best hash functions around in terms of both
- * statistical properties and speed. It is NOT recommended for cryptographic
- * purposes.
- **/
-unsigned long int lookup( k, length, level)
-register unsigned char *k;         /* the key */
-register unsigned long int length; /* the length of the key */
-register unsigned long int level; /* the previous hash, or an arbitrary value*/
-{
-
-#define mix(a,b,c) \
-{ \
-  a -= b; a -= c; a ^= (c>>13); \
-  b -= c; b -= a; b ^= (a<<8); \
-  c -= a; c -= b; c ^= (b>>13); \
-  a -= b; a -= c; a ^= (c>>12);  \
-  b -= c; b -= a; b ^= (a<<16); \
-  c -= a; c -= b; c ^= (b>>5); \
-  a -= b; a -= c; a ^= (c>>3);  \
-  b -= c; b -= a; b ^= (a<<10); \
-  c -= a; c -= b; c ^= (b>>15); \
-}
-
-  typedef  unsigned long  int  ub4;   /* unsigned 4-byte quantities */
-  typedef  unsigned       char ub1;   /* unsigned 1-byte quantities */
-  register unsigned long int a,b,c,len;
-  
-  /* Set up the internal state */
-  len = length;
-  a = b = 0x9e3779b9;  /* the golden ratio; an arbitrary value */
-  c = level;           /* the previous hash value */
-  
-  /*---------------------------------------- handle most of the key */
-  while (len >= 12)
-    {
-      a += (k[0] +((ub4)k[1]<<8) +((ub4)k[2]<<16) +((ub4)k[3]<<24));
-      b += (k[4] +((ub4)k[5]<<8) +((ub4)k[6]<<16) +((ub4)k[7]<<24));
-      c += (k[8] +((ub4)k[9]<<8) +((ub4)k[10]<<16)+((ub4)k[11]<<24));
-      mix(a,b,c);
-      k += 12; len -= 12;
-    }
-  
-  /*------------------------------------- handle the last 11 bytes */
-  c += length;
-  switch(len)              /* all the case statements fall through */
-    {
-    case 11: c+=((ub4)k[10]<<24);
-    case 10: c+=((ub4)k[9]<<16);
-    case 9 : c+=((ub4)k[8]<<8);
-      /* the first byte of c is reserved for the length */
-    case 8 : b+=((ub4)k[7]<<24);
-    case 7 : b+=((ub4)k[6]<<16);
-    case 6 : b+=((ub4)k[5]<<8);
-    case 5 : b+=k[4];
-    case 4 : a+=((ub4)k[3]<<24);
-    case 3 : a+=((ub4)k[2]<<16);
-    case 2 : a+=((ub4)k[1]<<8);
-    case 1 : a+=k[0];
-      /* case 0: nothing left to add */
-    }
-  mix(a,b,c);
-  /*-------------------------------------------- report the result */
-  return c;
-}
-
diff --git a/ggsn/lookup.h b/ggsn/lookup.h
deleted file mode 100755
index 18b94c1..0000000
--- a/ggsn/lookup.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/* 
- * Hash lookup function.
- * Copyright (C) 2003, 2004 Mondru AB.
- * 
- * The contents of this file may be used under the terms of the GNU
- * General Public License Version 2, provided that the above copyright
- * notice and this permission notice is included in all copies or
- * substantial portions of the software.
- * 
- */
-
-/**
- * lookup()
- * Generates a 32 bit hash.
- * Based on public domain code by Bob Jenkins
- * It should be one of the best hash functions around in terms of both
- * statistical properties and speed. It is NOT recommended for cryptographic
- * purposes.
- **/
-
-#ifndef _LOOKUP_H
-#define _LOOKUP_H
-unsigned long int lookup( unsigned char *k, unsigned long int length, unsigned long int level);
-
-#endif	/* !_LOOKUP_H */
diff --git a/ggsn/syserr.c b/ggsn/syserr.c
deleted file mode 100644
index 002d8c3..0000000
--- a/ggsn/syserr.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/* 
- * Syslog functions.
- * Copyright (C) 2003, 2004 Mondru AB.
- * 
- * The contents of this file may be used under the terms of the GNU
- * General Public License Version 2, provided that the above copyright
- * notice and this permission notice is included in all copies or
- * substantial portions of the software.
- * 
- */
-
-#include <stdarg.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <stdio.h>
-#include <syslog.h>
-#include <string.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#include "syserr.h"
-
-
-void sys_err(int pri, char *fn, int ln, int en, char *fmt, ...) {
-  va_list args;
-  char buf[SYSERR_MSGSIZE];
-
-  va_start(args, fmt);
-  vsnprintf(buf, SYSERR_MSGSIZE, fmt, args);
-  va_end(args);
-  buf[SYSERR_MSGSIZE-1] = 0; /* Make sure it is null terminated */
-  if (en)
-    syslog(pri, "%s: %d: %d (%s) %s", fn, ln, en, strerror(en), buf);
-  else
-    syslog(pri, "%s: %d: %s", fn, ln, buf);
-}
-
-void sys_errpack(int pri, char *fn, int ln, int en, struct sockaddr_in *peer,
-		 void *pack, unsigned len, char *fmt, ...) {
-  
-  va_list args;
-  char buf[SYSERR_MSGSIZE];
-  char buf2[SYSERR_MSGSIZE];
-  unsigned int n;
-  int pos;
-  
-  va_start(args, fmt);
-  vsnprintf(buf, SYSERR_MSGSIZE, fmt, args);
-  va_end(args);
-  buf[SYSERR_MSGSIZE-1] = 0;
-
-  snprintf(buf2, SYSERR_MSGSIZE, "Packet from %s:%u, length: %d, content:",
-	   inet_ntoa(peer->sin_addr),
-	   ntohs(peer->sin_port),
-	   len);
-  buf2[SYSERR_MSGSIZE-1] = 0;
-  pos = strlen(buf2);
-  for(n=0; n<len; n++) {
-    if ((pos+4)<SYSERR_MSGSIZE) {
-      sprintf((buf2+pos), " %02hhx", ((unsigned char*)pack)[n]);
-      pos += 3;
-    }
-  }
-  buf2[pos] = 0;
-  
-  if (en)
-    syslog(pri, "%s: %d: %d (%s) %s. %s", fn, ln, en, strerror(en), buf, buf2);
-  else
-    syslog(pri, "%s: %d: %s. %s", fn, ln, buf, buf2);
-
-}
diff --git a/ggsn/syserr.h b/ggsn/syserr.h
deleted file mode 100644
index a1ccb2d..0000000
--- a/ggsn/syserr.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* 
- * Syslog functions.
- * Copyright (C) 2003, 2004 Mondru AB.
- * 
- * The contents of this file may be used under the terms of the GNU
- * General Public License Version 2, provided that the above copyright
- * notice and this permission notice is included in all copies or
- * substantial portions of the software.
- * 
- */
-
-#ifndef _SYSERR_H
-#define _SYSERR_H
-
-#define SYSERR_MSGSIZE 256
-
-void sys_err(int pri, char *filename, int en, int line, char *fmt, ...);
-void sys_errpack(int pri, char *fn, int ln, int en, struct sockaddr_in *peer,
-		 void *pack, unsigned len, char *fmt, ...);
-
-#endif	/* !_SYSERR_H */
diff --git a/ggsn/tun.c b/ggsn/tun.c
deleted file mode 100644
index 1cc706b..0000000
--- a/ggsn/tun.c
+++ /dev/null
@@ -1,897 +0,0 @@
-/* 
- * TUN interface functions.
- * Copyright (C) 2002, 2003, 2004 Mondru AB.
- * 
- * The contents of this file may be used under the terms of the GNU
- * General Public License Version 2, provided that the above copyright
- * notice and this permission notice is included in all copies or
- * substantial portions of the software.
- * 
- */
-
-/*
- * tun.c: Contains all TUN functionality. Is able to handle multiple
- * tunnels in the same program. Each tunnel is identified by the struct,
- * which is passed to functions.
- *
- */
-
-
-#include <syslog.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-
-#include <stdio.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/time.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <errno.h>
-#include <net/route.h>
-
-#if defined(__linux__)
-#include <linux/if.h>
-#include <linux/if_tun.h>
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
-
-#elif defined (__FreeBSD__)
-#include <net/if.h>
-#include <net/if_tun.h>
-
-#elif defined (__APPLE__)
-#include <net/if.h>
-
-#elif defined (__sun__)
-#include <stropts.h>
-#include <sys/sockio.h>
-#include <net/if.h>
-#include <net/if_tun.h>
-/*#include "sun_if_tun.h"*/
-
-#else
-#error  "Unknown platform!"
-#endif
-
-
-#include "tun.h"
-#include "syserr.h"
-
-
-#if defined(__linux__)
-
-int tun_nlattr(struct nlmsghdr *n, int nsize, int type, void *d, int dlen)
-{
-  int len = RTA_LENGTH(dlen);
-  int alen = NLMSG_ALIGN(n->nlmsg_len);
-  struct rtattr *rta = (struct rtattr*) (((void*)n) + alen);
-  if (alen + len > nsize)
-    return -1;
-  rta->rta_len = len;
-  rta->rta_type = type;
-  memcpy(RTA_DATA(rta), d, dlen);
-  n->nlmsg_len = alen + len;
-  return 0;
-}
-
-int tun_gifindex(struct tun_t *this, int *index) {
-  struct ifreq ifr;
-  int fd;
-
-  memset (&ifr, '\0', sizeof (ifr));
-  ifr.ifr_addr.sa_family = AF_INET;
-  ifr.ifr_dstaddr.sa_family = AF_INET;
-  ifr.ifr_netmask.sa_family = AF_INET;
-  strncpy(ifr.ifr_name, this->devname, IFNAMSIZ);
-  ifr.ifr_name[IFNAMSIZ-1] = 0; /* Make sure to terminate */
-  if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "socket() failed");
-  }
-  if (ioctl(fd, SIOCGIFINDEX, &ifr)) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "ioctl() failed");
-    close(fd);
-    return -1;
-  }
-  close(fd);
-  *index = ifr.ifr_ifindex;
-  return 0;
-}
-#endif
-
-int tun_sifflags(struct tun_t *this, int flags) {
-  struct ifreq ifr;
-  int fd;
-
-  memset (&ifr, '\0', sizeof (ifr));
-  ifr.ifr_flags = flags;
-  strncpy(ifr.ifr_name, this->devname, IFNAMSIZ);
-  ifr.ifr_name[IFNAMSIZ-1] = 0; /* Make sure to terminate */
-  if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "socket() failed");
-  }
-  if (ioctl(fd, SIOCSIFFLAGS, &ifr)) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "ioctl(SIOCSIFFLAGS) failed");
-    close(fd);
-    return -1;
-  }
-  close(fd);
-  return 0;
-}
-
-
-/* Currently unused 
-int tun_addroute2(struct tun_t *this,
-		  struct in_addr *dst,
-		  struct in_addr *gateway,
-		  struct in_addr *mask) {
-  
-  struct {
-    struct nlmsghdr 	n;
-    struct rtmsg 	r;
-    char buf[TUN_NLBUFSIZE];
-  } req;
-  
-  struct sockaddr_nl local;
-  int addr_len;
-  int fd;
-  int status;
-  struct sockaddr_nl nladdr;
-  struct iovec iov;
-  struct msghdr msg;
-
-  memset(&req, 0, sizeof(req));
-  req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
-  req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
-  req.n.nlmsg_type = RTM_NEWROUTE;
-  req.r.rtm_family = AF_INET;
-  req.r.rtm_table  = RT_TABLE_MAIN;
-  req.r.rtm_protocol = RTPROT_BOOT;
-  req.r.rtm_scope  = RT_SCOPE_UNIVERSE;
-  req.r.rtm_type  = RTN_UNICAST;
-  tun_nlattr(&req.n, sizeof(req), RTA_DST, dst, 4);
-  tun_nlattr(&req.n, sizeof(req), RTA_GATEWAY, gateway, 4);
-  
-  if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "socket() failed");
-    return -1;
-  }
-
-  memset(&local, 0, sizeof(local));
-  local.nl_family = AF_NETLINK;
-  local.nl_groups = 0;
-  
-  if (bind(fd, (struct sockaddr*)&local, sizeof(local)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "bind() failed");
-    close(fd);
-    return -1;
-  }
-
-  addr_len = sizeof(local);
-  if (getsockname(fd, (struct sockaddr*)&local, &addr_len) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "getsockname() failed");
-    close(fd);
-    return -1;
-  }
-
-  if (addr_len != sizeof(local)) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0,
-	    "Wrong address length %d", addr_len);
-    close(fd);
-    return -1;
-  }
-
-  if (local.nl_family != AF_NETLINK) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0,
-	    "Wrong address family %d", local.nl_family);
-    close(fd);
-    return -1;
-  }
-  
-  iov.iov_base = (void*)&req.n;
-  iov.iov_len = req.n.nlmsg_len;
-
-  msg.msg_name = (void*)&nladdr;
-  msg.msg_namelen = sizeof(nladdr),
-  msg.msg_iov = &iov;
-  msg.msg_iovlen = 1;
-  msg.msg_control = NULL;
-  msg.msg_controllen = 0;
-  msg.msg_flags = 0;
-
-  memset(&nladdr, 0, sizeof(nladdr));
-  nladdr.nl_family = AF_NETLINK;
-  nladdr.nl_pid = 0;
-  nladdr.nl_groups = 0;
-
-  req.n.nlmsg_seq = 0;
-  req.n.nlmsg_flags |= NLM_F_ACK;
-
-  status = sendmsg(fd, &msg, 0);  * TODO: Error check *
-  close(fd);
-  return 0;
-}
-*/
-
-int tun_addaddr(struct tun_t *this,
-		struct in_addr *addr,
-		struct in_addr *dstaddr,
-		struct in_addr *netmask) {
-
-#if defined(__linux__)
-  struct {
-    struct nlmsghdr 	n;
-    struct ifaddrmsg 	i;
-    char buf[TUN_NLBUFSIZE];
-  } req;
-  
-  struct sockaddr_nl local;
-  socklen_t addr_len;
-  int fd;
-  int status;
-  
-  struct sockaddr_nl nladdr;
-  struct iovec iov;
-  struct msghdr msg;
-
-  if (!this->addrs) /* Use ioctl for first addr to make ping work */
-    return tun_setaddr(this, addr, dstaddr, netmask);
-
-  memset(&req, 0, sizeof(req));
-  req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
-  req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
-  req.n.nlmsg_type = RTM_NEWADDR;
-  req.i.ifa_family = AF_INET;
-  req.i.ifa_prefixlen = 32; /* 32 FOR IPv4 */
-  req.i.ifa_flags = 0;
-  req.i.ifa_scope = RT_SCOPE_HOST; /* TODO or 0 */
-  if (tun_gifindex(this, &req.i.ifa_index)) {
-    return -1;
-  }
-
-  tun_nlattr(&req.n, sizeof(req), IFA_ADDRESS, addr, sizeof(addr));
-  tun_nlattr(&req.n, sizeof(req), IFA_LOCAL, dstaddr, sizeof(dstaddr));
-
-  if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "socket() failed");
-    return -1;
-  }
-
-  memset(&local, 0, sizeof(local));
-  local.nl_family = AF_NETLINK;
-  local.nl_groups = 0;
-  
-  if (bind(fd, (struct sockaddr*)&local, sizeof(local)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "bind() failed");
-    close(fd);
-    return -1;
-  }
-
-  addr_len = sizeof(local);
-  if (getsockname(fd, (struct sockaddr*)&local, &addr_len) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "getsockname() failed");
-    close(fd);
-    return -1;
-  }
-
-  if (addr_len != sizeof(local)) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0,
-	    "Wrong address length %d", addr_len);
-    close(fd);
-    return -1;
-  }
-
-  if (local.nl_family != AF_NETLINK) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, 0,
-	    "Wrong address family %d", local.nl_family);
-    close(fd);
-    return -1;
-  }
-  
-  iov.iov_base = (void*)&req.n;
-  iov.iov_len = req.n.nlmsg_len;
-
-  msg.msg_name = (void*)&nladdr;
-  msg.msg_namelen = sizeof(nladdr),
-  msg.msg_iov = &iov;
-  msg.msg_iovlen = 1;
-  msg.msg_control = NULL;
-  msg.msg_controllen = 0;
-  msg.msg_flags = 0;
-
-  memset(&nladdr, 0, sizeof(nladdr));
-  nladdr.nl_family = AF_NETLINK;
-  nladdr.nl_pid = 0;
-  nladdr.nl_groups = 0;
-
-  req.n.nlmsg_seq = 0;
-  req.n.nlmsg_flags |= NLM_F_ACK;
-
-  status = sendmsg(fd, &msg, 0); /* TODO Error check */
-
-  tun_sifflags(this, IFF_UP | IFF_RUNNING); /* TODO */
-  close(fd);
-  this->addrs++;
-  return 0;
-
-#elif defined (__FreeBSD__) || defined (__APPLE__)
-
-  int fd;
-  struct ifaliasreq      areq;
-
-  /* TODO: Is this needed on FreeBSD? */
-  if (!this->addrs) /* Use ioctl for first addr to make ping work */
-    return tun_setaddr(this, addr, dstaddr, netmask); /* TODO dstaddr */
-
-  memset(&areq, 0, sizeof(areq));
-
-  /* Set up interface name */
-  strncpy(areq.ifra_name, this->devname, IFNAMSIZ);
-  areq.ifra_name[IFNAMSIZ-1] = 0; /* Make sure to terminate */
-
-  ((struct sockaddr_in*) &areq.ifra_addr)->sin_family = AF_INET;
-  ((struct sockaddr_in*) &areq.ifra_addr)->sin_len = sizeof(areq.ifra_addr);
-  ((struct sockaddr_in*) &areq.ifra_addr)->sin_addr.s_addr = addr->s_addr;
-
-  ((struct sockaddr_in*) &areq.ifra_mask)->sin_family = AF_INET;
-  ((struct sockaddr_in*) &areq.ifra_mask)->sin_len    = sizeof(areq.ifra_mask);
-  ((struct sockaddr_in*) &areq.ifra_mask)->sin_addr.s_addr = netmask->s_addr;
-
-  /* For some reason FreeBSD uses ifra_broadcast for specifying dstaddr */
-  ((struct sockaddr_in*) &areq.ifra_broadaddr)->sin_family = AF_INET;
-  ((struct sockaddr_in*) &areq.ifra_broadaddr)->sin_len = 
-    sizeof(areq.ifra_broadaddr);
-  ((struct sockaddr_in*) &areq.ifra_broadaddr)->sin_addr.s_addr = 
-    dstaddr->s_addr;
-
-  /* Create a channel to the NET kernel. */
-  if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "socket() failed");
-    return -1;
-  }
-  
-  if (ioctl(fd, SIOCAIFADDR, (void *) &areq) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "ioctl(SIOCAIFADDR) failed");
-    close(fd);
-    return -1;
-  }
-
-  close(fd);
-  this->addrs++;
-  return 0;
-
-#elif defined (__sun__)
-  
-  if (!this->addrs) /* Use ioctl for first addr to make ping work */
-    return tun_setaddr(this, addr, dstaddr, netmask);
-  
-  sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	  "Setting multiple addresses not possible on Solaris");
-  return -1;
-
-#else
-#error  "Unknown platform!"
-#endif
-  
-}
-
-
-int tun_setaddr(struct tun_t *this,
-		struct in_addr *addr,
-		struct in_addr *dstaddr,
-		struct in_addr *netmask)
-{
-  struct ifreq   ifr;
-  int fd;
-
-  memset (&ifr, '\0', sizeof (ifr));
-  ifr.ifr_addr.sa_family = AF_INET;
-  ifr.ifr_dstaddr.sa_family = AF_INET;
-
-#if defined(__linux__)
-  ifr.ifr_netmask.sa_family = AF_INET;
-
-#elif defined(__FreeBSD__) || defined (__APPLE__)
-  ((struct sockaddr_in *) &ifr.ifr_addr)->sin_len = 
-    sizeof (struct sockaddr_in);
-  ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_len = 
-    sizeof (struct sockaddr_in);
-#endif
-
-  strncpy(ifr.ifr_name, this->devname, IFNAMSIZ);
-  ifr.ifr_name[IFNAMSIZ-1] = 0; /* Make sure to terminate */
-
-  /* Create a channel to the NET kernel. */
-  if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "socket() failed");
-    return -1;
-  }
-
-  if (addr) { /* Set the interface address */
-    this->addr.s_addr = addr->s_addr;
-    ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = addr->s_addr;
-    if (ioctl(fd, SIOCSIFADDR, (void *) &ifr) < 0) {
-      if (errno != EEXIST) {
-	sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-		"ioctl(SIOCSIFADDR) failed");
-      }
-      else {
-	sys_err(LOG_WARNING, __FILE__, __LINE__, errno,
-		"ioctl(SIOCSIFADDR): Address already exists");
-      }
-      close(fd);
-      return -1;
-    }
-  }
-
-  if (dstaddr) { /* Set the destination address */
-    this->dstaddr.s_addr = dstaddr->s_addr;
-    ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = 
-      dstaddr->s_addr;
-    if (ioctl(fd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	      "ioctl(SIOCSIFDSTADDR) failed");
-      close(fd);
-      return -1; 
-    }
-  }
-
-  if (netmask) { /* Set the netmask */
-    this->netmask.s_addr = netmask->s_addr;
-#if defined(__linux__)
-    ((struct sockaddr_in *) &ifr.ifr_netmask)->sin_addr.s_addr = 
-      netmask->s_addr;
-
-#elif defined(__FreeBSD__) || defined (__APPLE__)
-    ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = 
-      netmask->s_addr;
-
-#elif defined(__sun__)
-    ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = 
-      netmask->s_addr;
-#else
-#error  "Unknown platform!"
-#endif
-
-    if (ioctl(fd, SIOCSIFNETMASK, (void *) &ifr) < 0) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	      "ioctl(SIOCSIFNETMASK) failed");
-      close(fd);
-      return -1;
-    }
-  }
-  
-  close(fd);
-  this->addrs++;
-  
-  /* On linux the route to the interface is set automatically
-     on FreeBSD we have to do this manually */
-
-  /* TODO: How does it work on Solaris? */
-
-  tun_sifflags(this, IFF_UP | IFF_RUNNING);
-
-#if defined(__FreeBSD__) || defined (__APPLE__)
-  tun_addroute(this, dstaddr, addr, netmask);
-  this->routes = 1;
-#endif
-
-  return 0;
-}
-
-int tun_route(struct tun_t *this,
-	      struct in_addr *dst,
-	      struct in_addr *gateway,
-	      struct in_addr *mask,
-	      int delete)
-{
-
-
-  /* TODO: Learn how to set routing table on sun  */
-
-#if defined(__linux__)
-
-  struct rtentry r;
-  int fd;
-
-  memset (&r, '\0', sizeof (r));
-  r.rt_flags = RTF_UP | RTF_GATEWAY; /* RTF_HOST not set */
-
-  /* Create a channel to the NET kernel. */
-  if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "socket() failed");
-    return -1;
-  }
-
-  r.rt_dst.sa_family     = AF_INET;
-  r.rt_gateway.sa_family = AF_INET;
-  r.rt_genmask.sa_family = AF_INET;
-  ((struct sockaddr_in *) &r.rt_dst)->sin_addr.s_addr = dst->s_addr;
-  ((struct sockaddr_in *) &r.rt_gateway)->sin_addr.s_addr = gateway->s_addr;
-  ((struct sockaddr_in *) &r.rt_genmask)->sin_addr.s_addr = mask->s_addr;
-  
-  if (delete) {
-    if (ioctl(fd, SIOCDELRT, (void *) &r) < 0) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	      "ioctl(SIOCDELRT) failed");
-      close(fd);
-      return -1;
-    }
-  }
-  else {
-    if (ioctl(fd, SIOCADDRT, (void *) &r) < 0) {
-      sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	      "ioctl(SIOCADDRT) failed");
-      close(fd);
-      return -1;
-    }
-  }
-  close(fd);
-  return 0;
-  
-#elif defined(__FreeBSD__) || defined (__APPLE__)
-
-struct {
-  struct rt_msghdr rt;
-  struct sockaddr_in dst;
-  struct sockaddr_in gate;
-  struct sockaddr_in mask;
-} req;
-
- int fd;
- struct rt_msghdr *rtm;
- 
- if((fd = socket(AF_ROUTE, SOCK_RAW, 0)) == -1) {
-   sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	   "socket() failed");
-   return -1;
- }
- 
- memset(&req, 0x00, sizeof(req));
- 
- rtm  = &req.rt;
- 
- rtm->rtm_msglen = sizeof(req);
- rtm->rtm_version = RTM_VERSION;
- if (delete) {
-   rtm->rtm_type = RTM_DELETE;
- }
- else {
-   rtm->rtm_type = RTM_ADD;
- }
- rtm->rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC;  /* TODO */
- rtm->rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
- rtm->rtm_pid = getpid();      
- rtm->rtm_seq = 0044;                                 /* TODO */
- 
- req.dst.sin_family       = AF_INET;
- req.dst.sin_len          = sizeof(req.dst);
- req.mask.sin_family      = AF_INET;
- req.mask.sin_len         = sizeof(req.mask);
- req.gate.sin_family      = AF_INET;
- req.gate.sin_len         = sizeof(req.gate);
-
- req.dst.sin_addr.s_addr  = dst->s_addr;
- req.mask.sin_addr.s_addr = mask->s_addr;
- req.gate.sin_addr.s_addr = gateway->s_addr;
- 
- if(write(fd, rtm, rtm->rtm_msglen) < 0) {
-   sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	   "write() failed");
-   close(fd);
-   return -1;
- }
- close(fd);
- return 0;
-
-#elif defined(__sun__)
- sys_err(LOG_WARNING, __FILE__, __LINE__, errno,
-	 "Could not set up routing on Solaris. Please add route manually.");
- return 0;
- 
-#else
-#error  "Unknown platform!"
-#endif
-
-}
-
-int tun_addroute(struct tun_t *this,
-		 struct in_addr *dst,
-		 struct in_addr *gateway,
-		 struct in_addr *mask)
-{
-  return tun_route(this, dst, gateway, mask, 0);
-}
-
-int tun_delroute(struct tun_t *this,
-		 struct in_addr *dst,
-		 struct in_addr *gateway,
-		 struct in_addr *mask)
-{
-  return tun_route(this, dst, gateway, mask, 1);
-}
-
-
-int tun_new(struct tun_t **tun)
-{
-
-#if defined(__linux__)
-  struct ifreq ifr;
-
-#elif defined(__FreeBSD__) || defined (__APPLE__)
-  char devname[IFNAMSIZ+5]; /* "/dev/" + ifname */
-  int devnum;
-  struct ifaliasreq areq;
-  int fd;
-
-#elif defined(__sun__)
-  int if_fd, ppa = -1;
-  static int ip_fd = 0;
-  int muxid;
-  struct ifreq ifr;
-
-#else
-#error  "Unknown platform!"
-#endif
-  
-  if (!(*tun = calloc(1, sizeof(struct tun_t)))) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "calloc() failed");
-    return EOF;
-  }
-  
-  (*tun)->cb_ind = NULL;
-  (*tun)->addrs = 0;
-  (*tun)->routes = 0;
-  
-#if defined(__linux__)
-  /* Open the actual tun device */
-  if (((*tun)->fd  = open("/dev/net/tun", O_RDWR)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "open() failed");
-    return -1;
-  }
-  
-  /* Set device flags. For some weird reason this is also the method
-     used to obtain the network interface name */
-  memset(&ifr, 0, sizeof(ifr));
-  ifr.ifr_flags = IFF_TUN | IFF_NO_PI; /* Tun device, no packet info */
-  if (ioctl((*tun)->fd, TUNSETIFF, (void *) &ifr) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "ioctl() failed");
-    close((*tun)->fd);
-    return -1;
-  } 
-  
-  strncpy((*tun)->devname, ifr.ifr_name, IFNAMSIZ);
-  (*tun)->devname[IFNAMSIZ] = 0;
-  
-  ioctl((*tun)->fd, TUNSETNOCSUM, 1); /* Disable checksums */
-  return 0;
-  
-#elif defined(__FreeBSD__) || defined (__APPLE__)
-
-  /* Find suitable device */
-  for (devnum = 0; devnum < 255; devnum++) { /* TODO 255 */ 
-    snprintf(devname, sizeof(devname), "/dev/tun%d", devnum);
-    devname[sizeof(devname)] = 0;
-    if (((*tun)->fd = open(devname, O_RDWR)) >= 0) break;
-    if (errno != EBUSY) break;
-  } 
-  if ((*tun)->fd < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "Can't find tunnel device");
-    return -1;
-  }
-
-  snprintf((*tun)->devname, sizeof((*tun)->devname), "tun%d", devnum);
-  (*tun)->devname[sizeof((*tun)->devname)] = 0;
-
-  /* The tun device we found might have "old" IP addresses allocated */
-  /* We need to delete those. This problem is not present on Linux */
-
-  memset(&areq, 0, sizeof(areq));
-
-  /* Set up interface name */
-  strncpy(areq.ifra_name, (*tun)->devname, IFNAMSIZ);
-  areq.ifra_name[IFNAMSIZ-1] = 0; /* Make sure to terminate */
-
-  /* Create a channel to the NET kernel. */
-  if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
-	    "socket() failed");
-    return -1;
-  }
-  
-  /* Delete any IP addresses until SIOCDIFADDR fails */
-  while (ioctl(fd, SIOCDIFADDR, (void *) &areq) != -1);
-
-  close(fd);
-  return 0;
-
-#elif defined(__sun__)
-
-  if( (ip_fd = open("/dev/udp", O_RDWR, 0)) < 0){
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "Can't open /dev/udp");
-    return -1;
-  }
-  
-  if( ((*tun)->fd = open("/dev/tun", O_RDWR, 0)) < 0){
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "Can't open /dev/tun");
-    return -1;
-  }
-  
-  /* Assign a new PPA and get its unit number. */
-  if( (ppa = ioctl((*tun)->fd, TUNNEWPPA, -1)) < 0){
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "Can't assign new interface");
-    return -1;
-  }
-  
-  if( (if_fd = open("/dev/tun", O_RDWR, 0)) < 0){
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "Can't open /dev/tun (2)");
-    return -1;
-  }
-  if(ioctl(if_fd, I_PUSH, "ip") < 0){
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "Can't push IP module");
-    return -1;
-  }
-  
-  /* Assign ppa according to the unit number returned by tun device */
-  if(ioctl(if_fd, IF_UNITSEL, (char *)&ppa) < 0){
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "Can't set PPA %d", ppa);
-    return -1;
-  }
-
-  /* Link the two streams */
-  if ((muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "Can't link TUN device to IP");
-    return -1;
-  }
-
-  close (if_fd);
-  
-  snprintf((*tun)->devname, sizeof((*tun)->devname), "tun%d", ppa);
-  (*tun)->devname[sizeof((*tun)->devname)] = 0;
-
-  memset(&ifr, 0, sizeof(ifr));
-  strcpy(ifr.ifr_name, (*tun)->devname);
-  ifr.ifr_ip_muxid = muxid;
-  
-  if (ioctl(ip_fd, SIOCSIFMUXID, &ifr) < 0) {
-    ioctl(ip_fd, I_PUNLINK, muxid);
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "Can't set multiplexor id");
-    return -1;
-  }
-  
-  /*  if (fcntl (fd, F_SETFL, O_NONBLOCK) < 0)
-      msg (M_ERR, "Set file descriptor to non-blocking failed"); */
-
-  return 0;
-
-#else
-#error  "Unknown platform!"
-#endif
-
-}
-
-int tun_free(struct tun_t *tun)
-{
-
-  if (tun->routes) {
-    tun_delroute(tun, &tun->dstaddr, &tun->addr, &tun->netmask);
-  }
-
-  if (close(tun->fd)) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "close() failed");
-  }
-
-  /* TODO: For solaris we need to unlink streams */
-
-  free(tun);
-  return 0;
-}
-
-
-int tun_set_cb_ind(struct tun_t *this, 
-  int (*cb_ind) (struct tun_t *tun, void *pack, unsigned len)) {
-  this->cb_ind = cb_ind;
-  return 0;
-}
-
-
-int tun_decaps(struct tun_t *this)
-{
-
-#if defined(__linux__) || defined (__FreeBSD__) || defined (__APPLE__)
-
-  unsigned char buffer[PACKET_MAX];
-  int status;
-  
-  if ((status = read(this->fd, buffer, sizeof(buffer))) <= 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "read() failed");
-    return -1;
-  }
-  
-  if (this->cb_ind)
-    return this->cb_ind(this, buffer, status);
-
-  return 0;
-
-#elif defined (__sun__)
-
-  unsigned char buffer[PACKET_MAX];
-  struct strbuf sbuf;
-  int f = 0;
-  
-  sbuf.maxlen = PACKET_MAX;      
-  sbuf.buf = buffer;
-  if (getmsg(this->fd, NULL, &sbuf, &f) < 0) {
-    sys_err(LOG_ERR, __FILE__, __LINE__, errno, "getmsg() failed");
-    return -1;
-  }
-
-  if (this->cb_ind)
-    return this->cb_ind(this, buffer, sbuf.len);
-
-  return 0;
-  
-#endif
-
-}
-
-
-int tun_encaps(struct tun_t *tun, void *pack, unsigned len)
-{
-
-#if defined(__linux__) || defined (__FreeBSD__) || defined (__APPLE__)
-
-  return write(tun->fd, pack, len);
-
-#elif defined (__sun__)
-
-  struct strbuf sbuf;
-  sbuf.len = len;      
-  sbuf.buf = pack;
-  return putmsg(tun->fd, NULL, &sbuf, 0);
-
-#endif
-}
-
-int tun_runscript(struct tun_t *tun, char* script) {
-  
-  char buf[TUN_SCRIPTSIZE];
-  char snet[TUN_ADDRSIZE];
-  char smask[TUN_ADDRSIZE];
-
-  strncpy(snet, inet_ntoa(tun->addr), sizeof(snet));
-  snet[sizeof(snet)-1] = 0;
-  strncpy(smask, inet_ntoa(tun->netmask), sizeof(smask));
-  smask[sizeof(smask)-1] = 0;
-  
-  /* system("ipup /dev/tun0 192.168.0.10 255.255.255.0"); */
-  snprintf(buf, sizeof(buf), "%s %s %s %s",
-	   script, tun->devname, snet, smask);
-  buf[sizeof(buf)-1] = 0;
-  system(buf);
-  return 0;
-}
diff --git a/ggsn/tun.h b/ggsn/tun.h
deleted file mode 100644
index 7972c53..0000000
--- a/ggsn/tun.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/* 
- * TUN interface functions.
- * Copyright (C) 2002, 2003 Mondru AB.
- * 
- * The contents of this file may be used under the terms of the GNU
- * General Public License Version 2, provided that the above copyright
- * notice and this permission notice is included in all copies or
- * substantial portions of the software.
- * 
- */
-
-#ifndef _TUN_H
-#define _TUN_H
-
-#define PACKET_MAX      8196 /* Maximum packet size we receive */
-#define TUN_SCRIPTSIZE   256
-#define TUN_ADDRSIZE     128
-#define TUN_NLBUFSIZE   1024
-
-struct tun_packet_t {
-  unsigned int ver:4;
-  unsigned int ihl:4;
-  unsigned int dscp:6;
-  unsigned int ecn:2;
-  unsigned int length:16;
-  unsigned int id:16;
-  unsigned int flags:3;
-  unsigned int fragment:13;
-  unsigned int ttl:8;
-  unsigned int protocol:8;
-  unsigned int check:16;
-  unsigned int src:32;
-  unsigned int dst:32;
-};
-
-
-/* ***********************************************************
- * Information storage for each tun instance
- *************************************************************/
-
-struct tun_t {
-  int fd;                /* File descriptor to tun interface */
-  struct in_addr addr;
-  struct in_addr dstaddr;
-  struct in_addr netmask;
-  int addrs;             /* Number of allocated IP addresses */
-  int routes;            /* One if we allocated an automatic route */
-  char devname[IFNAMSIZ];/* Name of the tun device */
-  int (*cb_ind) (struct tun_t *tun, void *pack, unsigned len);
-};
-
-
-extern int tun_new(struct tun_t **tun);
-extern int tun_free(struct tun_t *tun);
-extern int tun_decaps(struct tun_t *this);
-extern int tun_encaps(struct tun_t *tun, void *pack, unsigned len);
-
-extern int tun_addaddr(struct tun_t *this, struct in_addr *addr,
-		       struct in_addr *dstaddr, struct in_addr *netmask);
-
-
-extern int tun_setaddr(struct tun_t *this, struct in_addr *our_adr, 
-		       struct in_addr *his_adr, struct in_addr *net_mask);
-
-int tun_addroute(struct tun_t *this, struct in_addr *dst, 
-		 struct in_addr *gateway, struct in_addr *mask);
-
-extern int tun_set_cb_ind(struct tun_t *this, 
-     int (*cb_ind) (struct tun_t *tun, void *pack, unsigned len));
-
-
-extern int tun_runscript(struct tun_t *tun, char* script);
-
-#endif	/* !_TUN_H */