diff -u ntp-4.2.4p4+dfsg/debian/changelog ntp-4.2.4p4+dfsg/debian/changelog
--- ntp-4.2.4p4+dfsg/debian/changelog
+++ ntp-4.2.4p4+dfsg/debian/changelog
@@ -1,3 +1,9 @@
+ntp (1:4.2.4p4+dfsg-6ubuntu3~ppa1) intrepid; urgency=low
+
+  * Define _GNU_SOURCE to make IPv6 work. 
+
+ -- Matt LaPlante <mattl@google.com>  Thu, 04 Dec 2008 00:39:51 -0600
+
 ntp (1:4.2.4p4+dfsg-6ubuntu2) intrepid; urgency=low
 
   * debian/ntpdate.ifup: use a different lockfile to avoid dead-locks
diff -u ntp-4.2.4p4+dfsg/debian/patches/series ntp-4.2.4p4+dfsg/debian/patches/series
--- ntp-4.2.4p4+dfsg/debian/patches/series
+++ ntp-4.2.4p4+dfsg/debian/patches/series
@@ -13,0 +14 @@
+ipv6-gnu-source.diff
only in patch2:
unchanged:
--- ntp-4.2.4p4+dfsg.orig/debian/patches/ipv6-gnu-source.diff
+++ ntp-4.2.4p4+dfsg/debian/patches/ipv6-gnu-source.diff
@@ -0,0 +1,197 @@
+Index: ntp-4.2.4p4+dfsg/configure
+===================================================================
+--- ntp-4.2.4p4+dfsg.orig/configure	2008-12-04 10:53:53.755460796 -0600
++++ ntp-4.2.4p4+dfsg/configure	2008-12-04 10:54:08.300533538 -0600
+@@ -2619,6 +2619,11 @@
+ 
+ iCFLAGS="$CFLAGS"
+ 
++cat >>confdefs.h <<\_ACEOF
++#define _GNU_SOURCE 1
++_ACEOF
++
++
+ DEPDIR="${am__leading_dot}deps"
+ 
+ ac_config_commands="$ac_config_commands depfiles"
+@@ -15798,7 +15803,7 @@
+   ;;
+ *-*-irix6*)
+   # Find out which ABI we are using.
+-  echo '#line 15801 "configure"' > conftest.$ac_ext
++  echo '#line 15806 "configure"' > conftest.$ac_ext
+   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+   (eval $ac_compile) 2>&5
+   ac_status=$?
+@@ -18377,11 +18382,11 @@
+    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+    -e 's:$: $lt_compiler_flag:'`
+-   (eval echo "\"\$as_me:18380: $lt_compile\"" >&5)
++   (eval echo "\"\$as_me:18385: $lt_compile\"" >&5)
+    (eval "$lt_compile" 2>conftest.err)
+    ac_status=$?
+    cat conftest.err >&5
+-   echo "$as_me:18384: \$? = $ac_status" >&5
++   echo "$as_me:18389: \$? = $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 other than the usual output.
+@@ -18667,11 +18672,11 @@
+    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+    -e 's:$: $lt_compiler_flag:'`
+-   (eval echo "\"\$as_me:18670: $lt_compile\"" >&5)
++   (eval echo "\"\$as_me:18675: $lt_compile\"" >&5)
+    (eval "$lt_compile" 2>conftest.err)
+    ac_status=$?
+    cat conftest.err >&5
+-   echo "$as_me:18674: \$? = $ac_status" >&5
++   echo "$as_me:18679: \$? = $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 other than the usual output.
+@@ -18771,11 +18776,11 @@
+    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+    -e 's:$: $lt_compiler_flag:'`
+-   (eval echo "\"\$as_me:18774: $lt_compile\"" >&5)
++   (eval echo "\"\$as_me:18779: $lt_compile\"" >&5)
+    (eval "$lt_compile" 2>out/conftest.err)
+    ac_status=$?
+    cat out/conftest.err >&5
+-   echo "$as_me:18778: \$? = $ac_status" >&5
++   echo "$as_me:18783: \$? = $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
+@@ -21148,7 +21153,7 @@
+   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+   lt_status=$lt_dlunknown
+   cat > conftest.$ac_ext <<EOF
+-#line 21151 "configure"
++#line 21156 "configure"
+ #include "confdefs.h"
+ 
+ #if HAVE_DLFCN_H
+@@ -21248,7 +21253,7 @@
+   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+   lt_status=$lt_dlunknown
+   cat > conftest.$ac_ext <<EOF
+-#line 21251 "configure"
++#line 21256 "configure"
+ #include "confdefs.h"
+ 
+ #if HAVE_DLFCN_H
+@@ -23649,11 +23654,11 @@
+    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+    -e 's:$: $lt_compiler_flag:'`
+-   (eval echo "\"\$as_me:23652: $lt_compile\"" >&5)
++   (eval echo "\"\$as_me:23657: $lt_compile\"" >&5)
+    (eval "$lt_compile" 2>conftest.err)
+    ac_status=$?
+    cat conftest.err >&5
+-   echo "$as_me:23656: \$? = $ac_status" >&5
++   echo "$as_me:23661: \$? = $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 other than the usual output.
+@@ -23753,11 +23758,11 @@
+    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+    -e 's:$: $lt_compiler_flag:'`
+-   (eval echo "\"\$as_me:23756: $lt_compile\"" >&5)
++   (eval echo "\"\$as_me:23761: $lt_compile\"" >&5)
+    (eval "$lt_compile" 2>out/conftest.err)
+    ac_status=$?
+    cat out/conftest.err >&5
+-   echo "$as_me:23760: \$? = $ac_status" >&5
++   echo "$as_me:23765: \$? = $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
+@@ -25351,11 +25356,11 @@
+    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+    -e 's:$: $lt_compiler_flag:'`
+-   (eval echo "\"\$as_me:25354: $lt_compile\"" >&5)
++   (eval echo "\"\$as_me:25359: $lt_compile\"" >&5)
+    (eval "$lt_compile" 2>conftest.err)
+    ac_status=$?
+    cat conftest.err >&5
+-   echo "$as_me:25358: \$? = $ac_status" >&5
++   echo "$as_me:25363: \$? = $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 other than the usual output.
+@@ -25455,11 +25460,11 @@
+    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+    -e 's:$: $lt_compiler_flag:'`
+-   (eval echo "\"\$as_me:25458: $lt_compile\"" >&5)
++   (eval echo "\"\$as_me:25463: $lt_compile\"" >&5)
+    (eval "$lt_compile" 2>out/conftest.err)
+    ac_status=$?
+    cat out/conftest.err >&5
+-   echo "$as_me:25462: \$? = $ac_status" >&5
++   echo "$as_me:25467: \$? = $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
+@@ -27675,11 +27680,11 @@
+    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+    -e 's:$: $lt_compiler_flag:'`
+-   (eval echo "\"\$as_me:27678: $lt_compile\"" >&5)
++   (eval echo "\"\$as_me:27683: $lt_compile\"" >&5)
+    (eval "$lt_compile" 2>conftest.err)
+    ac_status=$?
+    cat conftest.err >&5
+-   echo "$as_me:27682: \$? = $ac_status" >&5
++   echo "$as_me:27687: \$? = $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 other than the usual output.
+@@ -27965,11 +27970,11 @@
+    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+    -e 's:$: $lt_compiler_flag:'`
+-   (eval echo "\"\$as_me:27968: $lt_compile\"" >&5)
++   (eval echo "\"\$as_me:27973: $lt_compile\"" >&5)
+    (eval "$lt_compile" 2>conftest.err)
+    ac_status=$?
+    cat conftest.err >&5
+-   echo "$as_me:27972: \$? = $ac_status" >&5
++   echo "$as_me:27977: \$? = $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 other than the usual output.
+@@ -28069,11 +28074,11 @@
+    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+    -e 's:$: $lt_compiler_flag:'`
+-   (eval echo "\"\$as_me:28072: $lt_compile\"" >&5)
++   (eval echo "\"\$as_me:28077: $lt_compile\"" >&5)
+    (eval "$lt_compile" 2>out/conftest.err)
+    ac_status=$?
+    cat out/conftest.err >&5
+-   echo "$as_me:28076: \$? = $ac_status" >&5
++   echo "$as_me:28081: \$? = $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
+Index: ntp-4.2.4p4+dfsg/configure.ac
+===================================================================
+--- ntp-4.2.4p4+dfsg.orig/configure.ac	2008-12-04 10:52:42.242180500 -0600
++++ ntp-4.2.4p4+dfsg/configure.ac	2008-12-04 10:53:12.412406268 -0600
+@@ -20,6 +20,9 @@
+ dnl Grab any initial CFLAGS so we can pick better defaults.
+ iCFLAGS="$CFLAGS"
+ 
++dnl Define _GNU_SOURCE, this should be done before any feature test.
++AC_DEFINE(_GNU_SOURCE)
++
+ dnl check these early to avoid autoconf warnings
+ AC_AIX
+ AC_MINIX