Now shuts down dhclient after it gets an IP address. Really, this

should be a dhclient option, but dhclient doesn't seem to have it.

This saves network traffic, but the primary reason for doing it is
that if users try to change information that dhclient sets (such as
hostname), dhclient periodially clobbers their changes when it
renews the lease.

tmcd/freebsd/dhclient-exit-hooks

@@ -14,4 +14,14 @@ fi
 # 
 /etc/testbed/sethostname $new_domain_name
 
+#
+# Once we have an IP address, we can stop dhclient so that it doesn't get
+# in the way 
+#
+if [ x"$reason" = xREBOOT ]; then
+	# I'd love to use the dhclient.pid file, but it helpfully has not been
+	# created at this point
+	killall dhclient
+fi  
+
 exit 0