diff --git a/config.h.in b/config.h.in
index 8099f2f678..b3e548e5d7 100644
--- a/config.h.in
+++ b/config.h.in
@@ -16,7 +16,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: config.h.in,v 1.53 2002/12/04 01:34:41 marka Exp $ */
+/* $Id: config.h.in,v 1.54 2003/04/01 05:27:39 marka Exp $ */
 
 /***
  *** This file is not to be included by any public header files, because
@@ -53,6 +53,9 @@
 /* define if catgets() is available */
 #undef HAVE_CATGETS
 
+/* define if getifaddrs() exists */
+#undef HAVE_GETIFADDRS
+
 /* define if you have the NET_RT_IFLIST sysctl variable and sys/sysctl.h */
 #undef HAVE_IFLIST_SYSCTL
 
diff --git a/configure b/configure
index c62d5ac234..0205a5bfd7 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 1.338 .
+# From configure.in Revision: 1.340 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.53.
 #
@@ -995,6 +995,8 @@ Optional Features:
     --disable-libtool-lock  avoid locking (might break parallel builds)
   --enable-libbind		build libbind default=no
   --enable-ipv6		use IPv6 default=autodetect
+  --enable-getifaddrs    Enable the use of getifaddrs() [yes|no|glibc].
+             glibc: Use getifaddrs() in glibc if you know it supports IPv6.
   --disable-linux-caps	disable linux capabilities
 
 Optional Packages:
@@ -1829,7 +1831,7 @@ done
 #
 # Special processing of paths depending on whether --prefix,
 # --sysconfdir or --localstatedir arguments were given.  What's
-# desired is some compatability with the way previous versions
+# desired is some compatibility with the way previous versions
 # of BIND built; they defaulted to /usr/local for most parts of
 # the installation, but named.boot/named.conf was in /etc
 # and named.pid was in /var/run.
@@ -7605,7 +7607,7 @@ test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
 case $host in
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 7608 "configure"' > conftest.$ac_ext
+  echo '#line 7610 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -8155,7 +8157,7 @@ chmod -w .
 save_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -o out/conftest2.$ac_objext"
 compiler_c_o=no
-if { (eval echo configure:8158: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>out/conftest.err; } && test -s out/conftest2.$ac_objext; then
+if { (eval echo configure:8160: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>out/conftest.err; } && test -s out/conftest2.$ac_objext; then
   # The compiler can only warn and ignore the option if not recognized
   # So say no if there are warnings
   if test -s out/conftest.err; then
@@ -10022,7 +10024,7 @@ else
     lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 10025 "configure"
+#line 10027 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -10120,7 +10122,7 @@ else
     lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 10123 "configure"
+#line 10125 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12577,6 +12579,284 @@ fi
 
 
 
+# Check whether --enable-getifaddrs or --disable-getifaddrs was given.
+if test "${enable_getifaddrs+set}" = set; then
+  enableval="$enable_getifaddrs"
+  want_getifaddrs="$enableval"
+else
+  want_getifaddrs="yes"
+fi;
+
+case $want_getifaddrs in
+yes|libc)
+#
+# Do we have getifaddrs() ?
+#
+case $host in
+*-linux*)
+	# Some recent versions of glibc support getifaddrs() which does not
+	# provide AF_INET6 addresses while the function provided by the USAGI
+	# project handles the AF_INET6 case correctly.  We need to avoid
+	# using the former but prefer the latter unless overridden by
+	# --enable-getifaddrs=glibc.
+	if $use_getifaddrs = glibc
+	then
+		echo "$as_me:$LINENO: checking for getifaddrs" >&5
+echo $ECHO_N "checking for getifaddrs... $ECHO_C" >&6
+if test "${ac_cv_func_getifaddrs+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+#include "confdefs.h"
+/* From autoconf 2.57 */
+/* Define getifaddrs to an innocuous variant, in case <limits.h> declares getifaddrs.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define getifaddrs innocuous_getifaddrs
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char getifaddrs (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef getifaddrs
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char getifaddrs ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_getifaddrs) || defined (__stub___getifaddrs)
+choke me
+#else
+char (*f) () = getifaddrs;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#ifdef F77_DUMMY_MAIN
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+#endif
+int
+main ()
+{
+return f != getifaddrs;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_getifaddrs=yes
+else
+  echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+ac_cv_func_getifaddrs=no
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_getifaddrs" >&5
+echo "${ECHO_T}$ac_cv_func_getifaddrs" >&6
+if test $ac_cv_func_getifaddrs = yes; then
+  cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETIFADDRS 1
+_ACEOF
+
+fi
+
+	else
+		save_LIBS="$LIBS"
+		LIBS="-L/usr/local/v6/lib $LIBS"
+		echo "$as_me:$LINENO: checking for getifaddrs in -linet6" >&5
+echo $ECHO_N "checking for getifaddrs in -linet6... $ECHO_C" >&6
+if test "${ac_cv_lib_inet6_getifaddrs+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-linet6  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+#include "confdefs.h"
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char getifaddrs ();
+#ifdef F77_DUMMY_MAIN
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+#endif
+int
+main ()
+{
+getifaddrs ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_inet6_getifaddrs=yes
+else
+  echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+ac_cv_lib_inet6_getifaddrs=no
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_inet6_getifaddrs" >&5
+echo "${ECHO_T}$ac_cv_lib_inet6_getifaddrs" >&6
+if test $ac_cv_lib_inet6_getifaddrs = yes; then
+  LIBS="$LIBS -linet6"
+			cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETIFADDRS 1
+_ACEOF
+
+else
+  LIBS=${save_LIBS}
+fi
+
+	fi
+	;;
+*)
+	echo "$as_me:$LINENO: checking for getifaddrs" >&5
+echo $ECHO_N "checking for getifaddrs... $ECHO_C" >&6
+if test "${ac_cv_func_getifaddrs+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+#include "confdefs.h"
+/* From autoconf 2.57 */
+/* Define getifaddrs to an innocuous variant, in case <limits.h> declares getifaddrs.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define getifaddrs innocuous_getifaddrs
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char getifaddrs (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef getifaddrs
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char getifaddrs ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_getifaddrs) || defined (__stub___getifaddrs)
+choke me
+#else
+char (*f) () = getifaddrs;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#ifdef F77_DUMMY_MAIN
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+#endif
+int
+main ()
+{
+return f != getifaddrs;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_getifaddrs=yes
+else
+  echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+ac_cv_func_getifaddrs=no
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_getifaddrs" >&5
+echo "${ECHO_T}$ac_cv_func_getifaddrs" >&6
+if test $ac_cv_func_getifaddrs = yes; then
+  cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETIFADDRS 1
+_ACEOF
+
+fi
+
+	;;
+esac
+;;
+no)
+;;
+esac
+
 #
 # Look for a sysctl call to get the list of network interfaces.
 #