diff -Nur olsrd-0-5-6-fc691af9a18d.orig/Makefile olsrd-0-5-6-fc691af9a18d/Makefile
--- olsrd-0-5-6-fc691af9a18d.orig/Makefile	2009-03-14 22:39:09.000000000 +0000
+++ olsrd-0-5-6-fc691af9a18d/Makefile	2009-03-16 16:44:28.000000000 +0000
@@ -148,7 +148,7 @@
 ifeq ($(OS),win32)
 SUBDIRS := dot_draw httpinfo mini pgraph secure txtinfo
 else
-SUBDIRS := bmf dot_draw dyn_gw dyn_gw_plain httpinfo mini nameservice pgraph secure txtinfo
+SUBDIRS := bmf dot_draw dyn_gw dyn_gw_plain httpinfo mini nameservice pgraph secure txtinfo watchdog
 endif
 endif
 
@@ -229,6 +229,11 @@
 		$(MAKECMD) -C lib/arprefresh
 		$(MAKECMD) -C lib/arprefresh DESTDIR=$(DESTDIR) install
 
+watchdog:
+		$(MAKECMD) -C lib/watchdog clean
+		$(MAKECMD) -C lib/watchdog
+		$(MAKECMD) -C lib/watchdog DESTDIR=$(DESTDIR) install
+
 build_all:	all switch libs
 install_all:	install install_libs
 clean_all:	uberclean clean_libs
diff -Nur olsrd-0-5-6-fc691af9a18d.orig/lib/watchdog/Makefile olsrd-0-5-6-fc691af9a18d/lib/watchdog/Makefile
--- olsrd-0-5-6-fc691af9a18d.orig/lib/watchdog/Makefile	1970-01-01 00:00:00.000000000 +0000
+++ olsrd-0-5-6-fc691af9a18d/lib/watchdog/Makefile	2009-03-13 17:13:45.000000000 +0000
@@ -0,0 +1,56 @@
+# The olsr.org Optimized Link-State Routing daemon(olsrd)
+# Copyright (c) 2004-2009, the olsr.org team - see HISTORY file
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# * Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in
+#   the documentation and/or other materials provided with the
+#   distribution.
+# * Neither the name of olsr.org, olsrd nor the names of its
+#   contributors may be used to endorse or promote products derived
+#   from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+# Visit http://www.olsr.org for more information.
+#
+# If you find this software useful feel free to make a donation
+# to the project. For more information see the website or contact
+# the copyright holders.
+#
+
+OLSRD_PLUGIN =	true
+PLUGIN_NAME =	olsrd_watchdog
+PLUGIN_VER =	0.1
+
+TOPDIR = ../..
+include $(TOPDIR)/Makefile.inc
+
+default_target: $(PLUGIN_FULLNAME)
+
+$(PLUGIN_FULLNAME): $(OBJS) version-script.txt
+		$(CC) $(LDFLAGS) -o $(PLUGIN_FULLNAME) $(OBJS) $(LIBS)
+
+install:	$(PLUGIN_FULLNAME)
+		$(STRIP) $(PLUGIN_FULLNAME)
+		$(INSTALL_LIB)
+
+clean:
+		rm -f $(OBJS) $(SRCS:%.c=%.d) $(PLUGIN_FULLNAME)
diff -Nur olsrd-0-5-6-fc691af9a18d.orig/lib/watchdog/README_WATCHDOG olsrd-0-5-6-fc691af9a18d/lib/watchdog/README_WATCHDOG
--- olsrd-0-5-6-fc691af9a18d.orig/lib/watchdog/README_WATCHDOG	1970-01-01 00:00:00.000000000 +0000
+++ olsrd-0-5-6-fc691af9a18d/lib/watchdog/README_WATCHDOG	2009-03-13 17:13:45.000000000 +0000
@@ -0,0 +1,34 @@
+---------------------------------------------------------------------
+Watchdog PLUGIN FOR OLSRD
+by Henning Rogge <hrogge@googlemail.com>
+---------------------------------------------------------------------
+
+This plugin is used for detecting a total freeze of the olsrd by an external script.
+Once per timeinterval (configurable) it writes the current time into
+a file.
+
+---------------------------------------------------------------------
+PLUGIN PARAMETERS (PlParam)
+---------------------------------------------------------------------
+
+PlParam "file" "/tmp/olsrd.watchdog"
+	Name of the "still alive" file written by the watchdog
+PlParam "interval" "5"
+	Overwrite the file every X seconds
+
+
+---------------------------------------------------------------------
+SAMPLE CONFIG
+---------------------------------------------------------------------
+
+add in /etc/olsrd.conf:
+
+LoadPlugin "olsrd_watchdog.so.0.1"
+{
+  PlParam "file" "/tmp/olsrd.watchdog"
+  PlParam "interval" "5"
+}
+
+
+---------------------------------------------------------------------
+EOF / 26.05.2005
diff -Nur olsrd-0-5-6-fc691af9a18d.orig/lib/watchdog/src/olsrd_plugin.c olsrd-0-5-6-fc691af9a18d/lib/watchdog/src/olsrd_plugin.c
--- olsrd-0-5-6-fc691af9a18d.orig/lib/watchdog/src/olsrd_plugin.c	1970-01-01 00:00:00.000000000 +0000
+++ olsrd-0-5-6-fc691af9a18d/lib/watchdog/src/olsrd_plugin.c	2009-03-16 16:51:34.000000000 +0000
@@ -0,0 +1,145 @@
+
+/*
+ * The olsr.org Optimized Link-State Routing daemon(olsrd)
+ * Copyright (c) 2004-2009, the olsr.org team - see HISTORY file
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ * * Neither the name of olsr.org, olsrd nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Visit http://www.olsr.org for more information.
+ *
+ * If you find this software useful feel free to make a donation
+ * to the project. For more information see the website or contact
+ * the copyright holders.
+ *
+ */
+
+
+ /*
+  * Example plugin for olsrd.org OLSR daemon
+  * Only the bare minimum
+  */
+
+
+#include "olsrd_plugin.h"
+#include "plugin_util.h"
+#include "olsr.h"
+#include "defs.h"
+#include "scheduler.h"
+#include "olsr_cookie.h"
+
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <time.h>
+#define PLUGIN_INTERFACE_VERSION 5
+
+static struct olsr_cookie_info *watchdog_timer_cookie;
+
+static char watchdog_filename[FILENAME_MAX + 1] = "/tmp/olsr.watchdog";
+static int watchdog_interval = 5;
+
+/**
+ * Plugin interface version
+ * Used by main olsrd to check plugin interface version
+ */
+int
+olsrd_plugin_interface_version(void)
+{
+  return PLUGIN_INTERFACE_VERSION;
+}
+
+
+static int
+set_watchdog_file(const char *value, void *data __attribute__ ((unused)), set_plugin_parameter_addon addon __attribute__ ((unused)))
+{
+  strncpy(watchdog_filename, value, FILENAME_MAX);
+  return 0;
+}
+
+static int
+set_watchdog_interval(const char *value, void *data __attribute__ ((unused)), set_plugin_parameter_addon addon
+                      __attribute__ ((unused)))
+{
+  watchdog_interval = atoi(value);
+  return 0;
+}
+
+/**
+ * Register parameters from config file
+ * Called for all plugin parameters
+ */
+static const struct olsrd_plugin_parameters plugin_parameters[] = {
+  {.name = "file",.set_plugin_parameter = &set_watchdog_file,.data = NULL},
+  {.name = "interval",.set_plugin_parameter = &set_watchdog_interval,.data = NULL},
+};
+
+void
+olsrd_get_plugin_parameters(const struct olsrd_plugin_parameters **params, int *size)
+{
+  *params = plugin_parameters;
+  *size = ARRAYSIZE(plugin_parameters);
+}
+
+static void
+olsr_watchdog_write_alivefile(void *foo __attribute__ ((unused)))
+{
+  FILE *file = fopen(watchdog_filename, "w");
+  if (file == NULL) {
+    OLSR_PRINTF(3, "Error, cannot write watchdog alivefile");
+  } else {
+    fprintf(file, "%ld\n", (long)time(NULL));
+    fflush(file);
+    fclose(file);
+  }
+}
+
+/**
+ * Initialize plugin
+ * Called after all parameters are passed
+ */
+int
+olsrd_plugin_init(void)
+{
+  /* create the cookie */
+  watchdog_timer_cookie = olsr_alloc_cookie("Watchdog: write alive-file", OLSR_COOKIE_TYPE_TIMER);
+
+  /* Register the GW check */
+  olsr_start_timer(watchdog_interval * MSEC_PER_SEC, 0, OLSR_TIMER_PERIODIC,
+                   &olsr_watchdog_write_alivefile, NULL, watchdog_timer_cookie->ci_id);
+
+  return 1;
+}
+
+/*
+ * Local Variables:
+ * c-basic-offset: 2
+ * indent-tabs-mode: nil
+ * End:
+ */
diff -Nur olsrd-0-5-6-fc691af9a18d.orig/lib/watchdog/src/olsrd_plugin.h olsrd-0-5-6-fc691af9a18d/lib/watchdog/src/olsrd_plugin.h
--- olsrd-0-5-6-fc691af9a18d.orig/lib/watchdog/src/olsrd_plugin.h	1970-01-01 00:00:00.000000000 +0000
+++ olsrd-0-5-6-fc691af9a18d/lib/watchdog/src/olsrd_plugin.h	2009-03-13 17:13:45.000000000 +0000
@@ -0,0 +1,69 @@
+
+/*
+ * The olsr.org Optimized Link-State Routing daemon(olsrd)
+ * Copyright (c) 2004-2009, the olsr.org team - see HISTORY file
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ * * Neither the name of olsr.org, olsrd nor the names of its
+ *   contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Visit http://www.olsr.org for more information.
+ *
+ * If you find this software useful feel free to make a donation
+ * to the project. For more information see the website or contact
+ * the copyright holders.
+ *
+ */
+
+/*
+ * Dynamic linked library for the olsr.org olsr daemon
+ */
+
+#ifndef _OLSRD_PLUGIN_MINI
+#define _OLSRD_PLUGIN_MINI
+
+
+/****************************************************************************
+ *                Functions that the plugin MUST provide                    *
+ ****************************************************************************/
+
+
+/* Initialization function */
+int
+  olsrd_plugin_init(void);
+
+int
+  olsrd_plugin_interface_version(void);
+
+#endif
+
+/*
+ * Local Variables:
+ * c-basic-offset: 2
+ * indent-tabs-mode: nil
+ * End:
+ */
diff -Nur olsrd-0-5-6-fc691af9a18d.orig/lib/watchdog/version-script.txt olsrd-0-5-6-fc691af9a18d/lib/watchdog/version-script.txt
--- olsrd-0-5-6-fc691af9a18d.orig/lib/watchdog/version-script.txt	1970-01-01 00:00:00.000000000 +0000
+++ olsrd-0-5-6-fc691af9a18d/lib/watchdog/version-script.txt	2009-03-13 17:13:45.000000000 +0000
@@ -0,0 +1,10 @@
+VERS_1.0
+{
+  global:
+    olsrd_plugin_interface_version;
+    olsrd_plugin_init;
+    olsrd_get_plugin_parameters;
+
+  local:
+    *;
+};