diff --git a/configure b/configure
index 2445693eda..b95a8a4f62 100755
--- a/configure
+++ b/configure
@@ -14,7 +14,7 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 #
-# $Id: configure,v 1.284.2.19.2.81 2008/10/13 00:34:48 marka Exp $
+# $Id: configure,v 1.284.2.19.2.82 2008/10/15 00:15:42 marka Exp $
 #
 # Portions Copyright (C) 1996-2001  Nominum, Inc.
 #
@@ -29,7 +29,7 @@
 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-# From configure.in Revision: 1.294.2.23.2.89 .
+# From configure.in Revision: 1.294.2.23.2.91 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61.
 #
@@ -3639,6 +3639,15 @@ case "$host" in
 		STD_CDEFINES="$STD_CDEFINES -D_XPG4_2 -D__EXTENSIONS__"
 		CPPFLAGS="$CPPFLAGS -D_XPG4_2 -D__EXTENSIONS__"
 		;;
+	# POSIX doesn't include the IPv6 Advanced Socket API and glibc hides
+	# parts of the IPv6 Advanced Socket API as a result.  This is stupid
+	# as it breaks how the two halves (Basic and Advanced) of the IPv6
+	# Socket API were designed to be used but we have to live with it.
+	# Define _GNU_SOURCE to pull in the IPv6 Advanced Socket API.
+	*-linux*)
+		STD_CDEFINES="$STD_CDEFINES -D_GNU_SOURCE"
+		CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
+		;;
 esac
 
 
@@ -8970,8 +8979,8 @@ esac
 #
 # GNU libtool support
 #
-case $host in
-*-sunos*)
+case $build_os in
+sunos*)
     # Just set the maximum command line length for sunos as it otherwise
     # takes a exceptionally long time to work it out. Required for libtool.
     lt_cv_sys_max_cmd_len=4096;
@@ -9525,7 +9534,7 @@ ia64-*-hpux*)
   ;;
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 9528 "configure"' > conftest.$ac_ext
+  echo '#line 9537 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -11647,11 +11656,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:11650: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:11659: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:11654: \$? = $ac_status" >&5
+   echo "$as_me:11663: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -11890,11 +11899,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:11893: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:11902: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:11897: \$? = $ac_status" >&5
+   echo "$as_me:11906: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -11950,11 +11959,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:11953: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:11962: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:11957: \$? = $ac_status" >&5
+   echo "$as_me:11966: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -14098,7 +14107,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 14101 "configure"
+#line 14110 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -14196,7 +14205,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 14199 "configure"
+#line 14208 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -16389,11 +16398,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:16392: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:16401: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:16396: \$? = $ac_status" >&5
+   echo "$as_me:16405: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -16449,11 +16458,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:16452: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:16461: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:16456: \$? = $ac_status" >&5
+   echo "$as_me:16465: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -17777,7 +17786,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 17780 "configure"
+#line 17789 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -17875,7 +17884,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 17878 "configure"
+#line 17887 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -18712,11 +18721,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:18715: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:18724: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:18719: \$? = $ac_status" >&5
+   echo "$as_me:18728: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -18772,11 +18781,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:18775: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:18784: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:18779: \$? = $ac_status" >&5
+   echo "$as_me:18788: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -20806,11 +20815,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:20809: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:20818: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:20813: \$? = $ac_status" >&5
+   echo "$as_me:20822: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -21049,11 +21058,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:21052: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:21061: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:21056: \$? = $ac_status" >&5
+   echo "$as_me:21065: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -21109,11 +21118,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:21112: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:21121: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:21116: \$? = $ac_status" >&5
+   echo "$as_me:21125: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -23257,7 +23266,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 23260 "configure"
+#line 23269 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -23355,7 +23364,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 23358 "configure"
+#line 23367 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H