Index: ns3-3.9/ns-3.9/examples/tap/virtual-network-setup.sh
===================================================================
--- ns3-3.9.orig/ns-3.9/examples/tap/virtual-network-setup.sh	2010-06-30 14:07:30.651772536 +0800
+++ ns3-3.9/ns-3.9/examples/tap/virtual-network-setup.sh	2010-06-30 14:07:39.391831470 +0800
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 brctl addbr br-left
 brctl addbr br-right
 tunctl -t tap-left
