If you get the following error while running a XINS-based application:
org.xins.common.text.ParseException: The string "0:0:0:0:0:0:0:1%0" is not a valid IP address.
then you found out the hard way that XINS lacks IPv6 support. This applies to all current versions of XINS: 2.2, 2.3-beta1 and 3.0-beta1.
To work around this, set the system property