--- dhcp-3.0.6/client/scripts/linux
+++ dhcp-3.0.6/client/scripts/linux	2008/04/04 07:37:35
@@ -103,6 +103,54 @@
   done
 }
 
+remove_ntp_runtime_conf() {
+    if test -f "/var/run/ntp/servers.${interface}" ; then
+      rm -f "/var/run/ntp/servers.${interface}"
+
+      if test -x /etc/init.d/ntp ; then
+          /etc/init.d/ntp try-restart
+      fi
+    fi
+}
+
+make_ntp_runtime_conf() {
+  if [ "x$new_ntp_servers" != "x" ]; then
+    local restart=no
+    if test -f "/var/run/ntp/servers.${interface}" ; then
+        . "/var/run/ntp/servers.${interface}"
+        test "x$RUNTIME_SERVERS" = "x$new_ntp_servers" && return 0
+
+        restart=yes
+        rm -f "/var/run/ntp/servers.${interface}"
+    fi
+
+    cat > "/var/run/ntp/servers.${interface}" << EOF
+### BEGIN INFO
+#
+# Modified_by:  dhclient-script
+# Process:      /sbin/dhclient
+# Process_id:   $(pidof dhclient)
+# Script:       /sbin/dhclient-script
+#
+# Info:         This is a temporary generated config by the dhclient-script.
+#               In the case of a restart these infomrmations are used to
+#               add the ntp servers at runtime.
+### END INFO
+
+RUNTIME_SERVERS="$new_ntp_servers"
+
+EOF
+
+    if test -x /etc/init.d/ntp ; then
+      if test "$restart" = "no" ; then
+        /etc/init.d/ntp addserver $new_ntp_servers
+      else
+        /etc/init.d/ntp try-restart
+      fi
+    fi
+  fi
+}
+
 function write_informational_resolv_conf_header() {
   cat > /etc/resolv.conf << EOF
 ### BEGIN INFO
@@ -250,6 +298,7 @@
   fi
   if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 1 ) != 1 )); then
     make_resolv_conf
+    make_ntp_runtime_conf
     eval `grep --no-filename "^DHCLIENT_SET_HOSTNAME=" /etc/sysconfig/network/dhcp`
     if [ "$DHCLIENT_SET_HOSTNAME" = yes ] ; then
 
@@ -311,6 +360,7 @@
       route add default gw $router
     done
     make_resolv_conf
+    make_ntp_runtime_conf
     exit_with_hooks 0
   fi
   ifconfig $interface inet 0 down
@@ -321,5 +371,7 @@
 if test -f /etc/resolv.conf.saved.by.dhclient ; then
   mv /etc/resolv.conf.saved.by.dhclient /etc/resolv.conf
 fi
+# remove runtime ntp conf
+remove_ntp_runtime_conf
 
 exit_with_hooks 0