--- xen-4.3.0-testing/tools/examples/xl.conf.orig	2013-08-15 12:00:06.000000000 -0600
+++ xen-4.3.0-testing/tools/examples/xl.conf	2013-08-15 12:00:56.000000000 -0600
@@ -26,7 +26,7 @@
 #vif.default.script="vif-bridge"
 
 # default bridge device to use with vif-bridge hotplug scripts
-#vif.default.bridge="xenbr0"
+vif.default.bridge="br0"
 
 # Reserve a claim of memory when launching a guest. This guarantees immediate
 # feedback whether the guest can be launched due to memory exhaustion