! 
! Instead of killing the 'watchdog' subshell and leaving
! a sleep for the timeout, make sure all goes away cleanly.
! 
! This avoids needing killall in rc.d/jail for a clean shutdown
! and generally does not leave dangling processes on shutdown that
! something else has to kill.
! 
Index: etc/rc.shutdown
===================================================================
--- etc/rc.shutdown	(revision 186775)
+++ etc/rc.shutdown	(working copy)
@@ -98,7 +98,7 @@
 # Terminate the background watchdog timer (if it is running)
 #
 if [ -n "$_rcshutdown_watchdog" ]; then
-	kill -TERM $_rcshutdown_watchdog >/dev/null 2>&1
+	pkill -TERM -P $_rcshutdown_watchdog >/dev/null 2>&1
 fi
 
 # Insert other shutdown procedures here