Avoid starting Zeroconf if ip unspecified or set to localhost. Pick one interface address when given IP is 0.0.0.0
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<Python xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.w3.org/2001/XMLSchema" xsi:schemaLocation="python_xsd.xsd">
<![CDATA[import time,sys
def myprintfunc(arg):
print arg
sys.stdout.flush()
return arg]]>
</Python>