netdevice-watchdoog/luasrc/usr/sbin/netdevice-watchdog

+#!/usr/bin/lua
+local logread = io.popen("logread", 'r')
+for line in logread:lines() do
+  if line:match("unregister_netdevice: waiting for .* to become free.") then
+    os.execute("echo c > /proc/sysrq-trigger")
+  end
+end

nodewatcher/Makefile

-#
-# Copyright (C) 2006-2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
-
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=nodewatcher
-PKG_VERSION:=2013-02-13
-PKG_SOURCE_PROTO:=git
-PKG_SOURCE_URL:=git://freifunk-ol.de/ffol/software/nodewatcher.git
-PKG_SOURCE:=$(PKG_NAME).tar.gz
-PKG_SOURCE_VERSION:=HEAD
-PKG_SOURCE_SUBDIR:=$(PKG_NAME)
-
-PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)
-
-include $(INCLUDE_DIR)/package.mk
-
-define Package/nodewatcher
-  SECTION:=utilities
-  CATEGORY:=Utilities
-  TITLE:=Freifunk Oldenburg Nodewatcher
-  URL:=http://freifunk-ol.de
-  DEPENDS:=+libuci +ip +libiw
-endef
-
-define Build/InstallDev
-	$(INSTALL_DIR) $(1)/usr/bin
-	$(CP) $(PKG_BUILD_DIR)/nodewatcher $(1)/usr/bin/
-endef
-
-define Package/nodewatcher/install
-	$(INSTALL_DIR) $(1)/usr/bin
-	$(CP) $(PKG_BUILD_DIR)/nodewatcher $(1)/usr/bin/
-endef
-
-$(eval $(call BuildPackage,nodewatcher))
\ No newline at end of file