Don't require IPv6 library support in order to support IPv6 addresses.

Have our own routines to convert between IPv4/IPv6 addresses and
strings; that helps if, for example, we want to build binary versions of
tcpdump for Windows that can run both on NT 5 (W2K/WXP), which doesn't
have inet_ntop() or inet_pton(), and NT 6 (Vista/7/8/10), which do.  It
also means that we don't require IPv6 library support on UN*X to print
addresses (if somebody wants to build tcpdump for older UN*Xes lacking
IPv6 support in the system library or in add-on libraries).

Get rid of files in the missing directory that we don't need, and
various no-longer-necessary autoconf tests.

1 files changed, 30 insertions, 572 deletions

diff --git a/configure b/configure
index 4b8fcee6..954f1097 100755
--- a/configure
+++ b/configure
@@ -704,7 +704,6 @@ enable_smb
 with_user
 with_chroot
 with_sandbox_capsicum
-enable_ipv6
 with_system_libpcap
 with_crypto
 with_cap_ng
@@ -1332,8 +1331,6 @@ Optional Features:
   --disable-universal     don't build universal on OS X
   --enable-smb            enable possibly-buggy SMB printer default=yes
   --disable-smb           disable possibly-buggy SMB printer
-  --enable-ipv6           enable ipv6 (with ipv4) support
-  --disable-ipv6          disable ipv6 support
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -4594,9 +4591,9 @@ $as_echo "no" >&6; }
 fi
 
 #
-# We must check this before checking whether to enable IPv6, because,
-# on some platforms (such as SunOS 5.x), the test program requires
-# the extra networking libraries.
+# We must check this before checking whether to check the OS's IPv6,
+# support because, on some platforms (such as SunOS 5.x), the test
+# program requires the extra networking libraries.
 #
 
     # Most operating systems have gethostbyname() in the default searched
@@ -4860,30 +4857,19 @@ fi
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable ipv6" >&5
-$as_echo_n "checking whether to enable ipv6... " >&6; }
-# Check whether --enable-ipv6 was given.
-if test "${enable_ipv6+set}" = set; then :
-  enableval=$enable_ipv6;  case "$enableval" in
-yes)   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-       LOCALSRC="print-ip6opts.c print-mobility.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c print-babel.c $LOCALSRC"
-
-$as_echo "#define INET6 1" >>confdefs.h
-
-       ipv6=yes
-       ;;
-*)
-       { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-       ipv6=no
-       ;;
-  esac
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+#
+# Check whether AF_INET6 and struct in6_addr are defined.
+# If they aren't both defined, we don't have sufficient OS
+# support for IPv6, so we don't look for IPv6 support libraries,
+# and we define AF_INET6 and struct in6_addr ourselves.
+#
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the operating system supports IPv6" >&5
+$as_echo_n "checking whether the operating system supports IPv6... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-      /* AF_INET6 available check */
+
+/* AF_INET6 available check */
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
@@ -4900,21 +4886,23 @@ foo(struct in6_addr *addr)
 
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
-   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
-  LOCALSRC="print-ip6opts.c print-mobility.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c print-babel.c $LOCALSRC"
 
-$as_echo "#define INET6 1" >>confdefs.h
+$as_echo "#define HAVE_OS_IPV6_SUPPORT 1" >>confdefs.h
+
+	ipv6=yes
 
-  ipv6=yes
 else
-   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
-  ipv6=no
+	ipv6=no
+
+
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
 
 ipv6type=unknown
 ipv6lib=none
@@ -4935,8 +4923,7 @@ yes
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
   $EGREP "yes" >/dev/null 2>&1; then :
-  ipv6type=$i;
-				CFLAGS="-DINET6 $CFLAGS"
+  ipv6type=$i
 fi
 rm -f conftest*
 
@@ -4954,8 +4941,7 @@ if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
   ipv6type=$i;
 				ipv6lib=inet6;
 				ipv6libdir=/usr/local/v6/lib;
-				ipv6trylibc=yes;
-				CFLAGS="-DINET6 $CFLAGS"
+				ipv6trylibc=yes
 fi
 rm -f conftest*
 
@@ -4970,8 +4956,7 @@ yes
 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
   $EGREP "yes" >/dev/null 2>&1; then :
-  ipv6type=$i;
-				CFLAGS="-DINET6 $CFLAGS"
+  ipv6type=$i
 fi
 rm -f conftest*
 
@@ -4982,7 +4967,7 @@ rm -f conftest*
 				ipv6lib=inet6
 				ipv6libdir=/usr/inet6/lib
 				ipv6trylibc=yes;
-				CFLAGS="-DINET6 -I/usr/inet6/include $CFLAGS"
+				CFLAGS="-I/usr/inet6/include $CFLAGS"
 			fi
 			;;
 		toshiba)
@@ -4997,8 +4982,7 @@ if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
   $EGREP "yes" >/dev/null 2>&1; then :
   ipv6type=$i;
 				ipv6lib=inet6;
-				ipv6libdir=/usr/local/v6/lib;
-				CFLAGS="-DINET6 $CFLAGS"
+				ipv6libdir=/usr/local/v6/lib
 fi
 rm -f conftest*
 
@@ -5033,8 +5017,7 @@ if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
   $EGREP "yes" >/dev/null 2>&1; then :
   ipv6type=$i;
 				ipv6lib=inet6;
-				ipv6libdir=/usr/local/v6/lib;
-				CFLAGS="-DINET6 $CFLAGS"
+				ipv6libdir=/usr/local/v6/lib
 fi
 rm -f conftest*
 
@@ -5064,239 +5047,6 @@ if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then
 	fi
 fi
 
-
-if test "$ipv6" = "yes"; then
-	#
-	# XXX - on Tru64 UNIX 5.1, there is no "getaddrinfo()"
-	# function in libc; there are "ngetaddrinfo()" and
-	# "ogetaddrinfo()" functions, and <netdb.h> #defines
-	# "getaddrinfo" to be either "ngetaddrinfo" or
-	# "ogetaddrinfo", depending on whether _SOCKADDR_LEN
-	# or _XOPEN_SOURCE_EXTENDED are defined or not.
-	#
-	# So this test doesn't work on Tru64 5.1, and possibly
-	# on other 5.x releases.  This causes the configure
-	# script to become confused, and results in libpcap
-	# being unbuildable.
-	#
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing getaddrinfo" >&5
-$as_echo_n "checking for library containing getaddrinfo... " >&6; }
-if ${ac_cv_search_getaddrinfo+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_func_search_save_LIBS=$LIBS
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char getaddrinfo ();
-int
-main ()
-{
-return getaddrinfo ();
-  ;
-  return 0;
-}
-_ACEOF
-for ac_lib in '' socket; do
-  if test -z "$ac_lib"; then
-    ac_res="none required"
-  else
-    ac_res=-l$ac_lib
-    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
-  fi
-  if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_search_getaddrinfo=$ac_res
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext
-  if ${ac_cv_search_getaddrinfo+:} false; then :
-  break
-fi
-done
-if ${ac_cv_search_getaddrinfo+:} false; then :
-
-else
-  ac_cv_search_getaddrinfo=no
-fi
-rm conftest.$ac_ext
-LIBS=$ac_func_search_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_getaddrinfo" >&5
-$as_echo "$ac_cv_search_getaddrinfo" >&6; }
-ac_res=$ac_cv_search_getaddrinfo
-if test "$ac_res" != no; then :
-  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-  	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking getaddrinfo bug" >&5
-$as_echo_n "checking getaddrinfo bug... " >&6; }
-	if ${td_cv_buggygetaddrinfo+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test "$cross_compiling" = yes; then :
-  td_cv_buggygetaddrinfo=unknown
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#include <sys/types.h>
-#include <netdb.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-
-main()
-{
-  int passive, gaierr, inet4 = 0, inet6 = 0;
-  struct addrinfo hints, *ai, *aitop;
-  char straddr[INET6_ADDRSTRLEN], strport[16];
-
-  for (passive = 0; passive <= 1; passive++) {
-    memset(&hints, 0, sizeof(hints));
-    hints.ai_family = AF_UNSPEC;
-    hints.ai_flags = passive ? AI_PASSIVE : 0;
-    hints.ai_socktype = SOCK_STREAM;
-    hints.ai_protocol = IPPROTO_TCP;
-    if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) {
-      (void)gai_strerror(gaierr);
-      goto bad;
-    }
-    for (ai = aitop; ai; ai = ai->ai_next) {
-      if (ai->ai_addr == NULL ||
-          ai->ai_addrlen == 0 ||
-          getnameinfo(ai->ai_addr, ai->ai_addrlen,
-                      straddr, sizeof(straddr), strport, sizeof(strport),
-                      NI_NUMERICHOST|NI_NUMERICSERV) != 0) {
-        goto bad;
-      }
-      switch (ai->ai_family) {
-      case AF_INET:
-        if (strcmp(strport, "54321") != 0) {
-          goto bad;
-        }
-        if (passive) {
-          if (strcmp(straddr, "0.0.0.0") != 0) {
-            goto bad;
-          }
-        } else {
-          if (strcmp(straddr, "127.0.0.1") != 0) {
-            goto bad;
-          }
-        }
-        inet4++;
-        break;
-      case AF_INET6:
-        if (strcmp(strport, "54321") != 0) {
-          goto bad;
-        }
-        if (passive) {
-          if (strcmp(straddr, "::") != 0) {
-            goto bad;
-          }
-        } else {
-          if (strcmp(straddr, "::1") != 0) {
-            goto bad;
-          }
-        }
-        inet6++;
-        break;
-      case AF_UNSPEC:
-        goto bad;
-        break;
-#ifdef AF_UNIX
-      case AF_UNIX:
-#else
-#ifdef AF_LOCAL
-      case AF_LOCAL:
-#endif
-#endif
-      default:
-        /* another family support? */
-        break;
-      }
-    }
-  }
-
-  /* supported family should be 2, unsupported family should be 0 */
-  if (!(inet4 == 0 || inet4 == 2))
-    goto bad;
-  if (!(inet6 == 0 || inet6 == 2))
-    goto bad;
-
-  if (aitop)
-    freeaddrinfo(aitop);
-  exit(0);
-
- bad:
-  if (aitop)
-    freeaddrinfo(aitop);
-  exit(1);
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  td_cv_buggygetaddrinfo=no
-else
-  td_cv_buggygetaddrinfo=yes
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
-
-	if test "$td_cv_buggygetaddrinfo" = no; then
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: good" >&5
-$as_echo "good" >&6; }
-	elif test "$td_cv_buggygetaddrinfo" = unknown; then
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: unknown (cross-compiling)" >&5
-$as_echo "unknown (cross-compiling)" >&6; }
-	else
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: buggy" >&5
-$as_echo "buggy" >&6; }
-	fi
-
-	if test "$td_cv_buggygetaddrinfo" = "yes"; then
-		#
-		# XXX - it doesn't appear that "ipv6type" can ever be
-		# set to "linux".  Should this be testing for
-		# "linux-glibc", or for that *or* "linux-libinet6"?
-		# If the latter, note that "linux-libinet6" is also
-		# the type given to some non-Linux OSes.
-		#
-		if test "$ipv6type" != "linux"; then
-			echo 'Fatal: You must get working getaddrinfo() function.'
-			echo '       or you can specify "--disable-ipv6"'.
-			exit 1
-		else
-			echo 'Warning: getaddrinfo() implementation on your system seems be buggy.'
-			echo '         Better upgrade your system library to newest version'
-			echo '         of GNU C library (aka glibc).'
-		fi
-	fi
-
-fi
-
-	ac_fn_c_check_func "$LINENO" "getnameinfo" "ac_cv_func_getnameinfo"
-if test "x$ac_cv_func_getnameinfo" = xyes; then :
-  $as_echo "#define HAVE_GETNAMEINFO 1" >>confdefs.h
-
-else
-  case " $LIBOBJS " in
-  *" getnameinfo.$ac_objext "* ) ;;
-  *) LIBOBJS="$LIBOBJS getnameinfo.$ac_objext"
- ;;
-esac
-
-fi
-
-
-fi
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dnet_htoa declaration in netdnet/dnetdb.h" >&5
 $as_echo_n "checking for dnet_htoa declaration in netdnet/dnetdb.h... " >&6; }
 if ${td_cv_decl_netdnet_dnetdb_h_dnet_htoa+:} false; then :
@@ -5324,116 +5074,6 @@ $as_echo "#define HAVE_NETDNET_DNETDB_H_DNET_HTOA 1" >>confdefs.h
 
 fi
 
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for addrinfo" >&5
-$as_echo_n "checking for addrinfo... " >&6; }
-	if ${ac_cv_addrinfo+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#		include <netdb.h>
-int
-main ()
-{
-struct addrinfo a
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_addrinfo=yes
-else
-  ac_cv_addrinfo=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_addrinfo" >&5
-$as_echo "$ac_cv_addrinfo" >&6; }
-	if test $ac_cv_addrinfo = yes; then
-
-$as_echo "#define HAVE_ADDRINFO 1" >>confdefs.h
-
-	else
-
-$as_echo "#define NEED_ADDRINFO_H 1" >>confdefs.h
-
-	fi
-
-if test "$ac_cv_addrinfo" = no; then
-	missing_includes=yes
-fi
-
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for NI_MAXSERV" >&5
-$as_echo_n "checking for NI_MAXSERV... " >&6; }
-	if ${ac_cv_maxserv+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <netdb.h>
-#ifdef NI_MAXSERV
-yes
-#endif
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "yes" >/dev/null 2>&1; then :
-  ac_cv_maxserv=yes
-else
-  ac_cv_maxserv=no
-fi
-rm -f conftest*
-
-fi
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_maxserv" >&5
-$as_echo "$ac_cv_maxserv" >&6; }
-	if test $ac_cv_maxserv != yes; then
-		$as_echo "#define NEED_ADDRINFO_H 1" >>confdefs.h
-
-	fi
-
-if test "$ac_cv_maxserv" = no; then
-	missing_includes=yes
-fi
-
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for NI_NAMEREQD" >&5
-$as_echo_n "checking for NI_NAMEREQD... " >&6; }
-	if ${ac_cv_namereqd+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <netdb.h>
-#ifdef NI_NOFQDN
-yes
-#endif
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "yes" >/dev/null 2>&1; then :
-  ac_cv_namereqd=yes
-else
-  ac_cv_namereqd=no
-fi
-rm -f conftest*
-
-fi
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_namereqd" >&5
-$as_echo "$ac_cv_namereqd" >&6; }
-	if test $ac_cv_namereqd != yes; then
-		$as_echo "#define NEED_ADDRINFO_H 1" >>confdefs.h
-
-	fi
-
-if test "$ac_cv_namereqd" = no; then
-	missing_includes=yes
-fi
-
 ac_fn_c_check_func "$LINENO" "vfprintf" "ac_cv_func_vfprintf"
 if test "x$ac_cv_func_vfprintf" = xyes; then :
   $as_echo "#define HAVE_VFPRINTF 1" >>confdefs.h
@@ -6168,114 +5808,6 @@ fi
 # Check for these after AC_LBL_LIBPCAP, so we link with the appropriate
 # libraries (e.g., "-lsocket -lnsl" on Solaris).
 #
-# We don't use AC_REPLACE_FUNCS because that uses AC_CHECK_FUNCS which
-# use AC_CHECK_FUNC which doesn't let us specify the right #includes
-# to make this work on BSD/OS 4.x.  BSD/OS 4.x ships with the BIND8
-# resolver, and the way it defines inet_{ntop,pton} is rather strange;
-# it does not ship with a libc symbol "inet_ntop()", it ships with
-# "_inet_ntop()", and has a #define macro in one of the system headers
-# to rename it.
-#
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for inet_ntop" >&5
-$as_echo_n "checking for inet_ntop... " >&6; }
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-int
-main ()
-{
-char src[4], dst[128];
-inet_ntop(AF_INET, src, dst, sizeof(dst));
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-	case " $LIBOBJS " in
-  *" inet_ntop.$ac_objext "* ) ;;
-  *) LIBOBJS="$LIBOBJS inet_ntop.$ac_objext"
- ;;
-esac
-
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for inet_pton" >&5
-$as_echo_n "checking for inet_pton... " >&6; }
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-int
-main ()
-{
-char src[128], dst[4];
-inet_pton(AF_INET, src, dst);
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-	case " $LIBOBJS " in
-  *" inet_pton.$ac_objext "* ) ;;
-  *) LIBOBJS="$LIBOBJS inet_pton.$ac_objext"
- ;;
-esac
-
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for inet_aton" >&5
-$as_echo_n "checking for inet_aton... " >&6; }
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <sys/types.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-int
-main ()
-{
-char src[128];
-struct in_addr dst;
-inet_aton(src, &dst);
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-	case " $LIBOBJS " in
-  *" inet_aton.$ac_objext "* ) ;;
-  *) LIBOBJS="$LIBOBJS inet_aton.$ac_objext"
- ;;
-esac
-
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-
-#
-# Check for these after AC_LBL_LIBPCAP, for the same reason.
-#
 # You are in a twisty little maze of UN*Xes, all different.
 # Some might not have ether_ntohost().
 # Some might have it, but not declare it in any header file.
@@ -6493,44 +6025,6 @@ if test "x$ac_cv_lib_dlpi_dlpi_walk" = xyes; then :
 fi
 
 
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if sockaddr struct has sa_len member" >&5
-$as_echo_n "checking if sockaddr struct has sa_len member... " >&6; }
-	if ${ac_cv_sockaddr_has_sa_len+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#		include <sys/types.h>
-#		include <sys/socket.h>
-int
-main ()
-{
-u_int i = sizeof(((struct sockaddr *)0)->sa_len)
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_sockaddr_has_sa_len=yes
-else
-  ac_cv_sockaddr_has_sa_len=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sockaddr_has_sa_len" >&5
-$as_echo "$ac_cv_sockaddr_has_sa_len" >&6; }
-		if test $ac_cv_sockaddr_has_sa_len = yes ; then
-			$as_echo "#define HAVE_SOCKADDR_SA_LEN 1" >>confdefs.h
-
-	fi
-
-if test "$ac_cv_sockaddr_has_sa_len" = no; then
-	missing_includes=yes
-fi
-
 ac_fn_c_check_func "$LINENO" "pcap_list_datalinks" "ac_cv_func_pcap_list_datalinks"
 if test "x$ac_cv_func_pcap_list_datalinks" = xyes; then :
 
@@ -8293,42 +7787,6 @@ $as_echo "#define LBL_ALIGN 1" >>confdefs.h
 
     fi
 
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for h_errno" >&5
-$as_echo_n "checking for h_errno... " >&6; }
-	if ${ac_cv_var_h_errno+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#		include <sys/types.h>
-#		include <netdb.h>
-int
-main ()
-{
-int foo = h_errno;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_var_h_errno=yes
-else
-  ac_cv_var_h_errno=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_var_h_errno" >&5
-$as_echo "$ac_cv_var_h_errno" >&6; }
-	if test "$ac_cv_var_h_errno" = "yes"; then
-
-$as_echo "#define HAVE_H_ERRNO 1" >>confdefs.h
-
-	fi
-
-
 # Check for OpenSSL libcrypto
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to use OpenSSL libcrypto" >&5
 $as_echo_n "checking whether to use OpenSSL libcrypto... " >&6; }