The testsuite/imports/test-jars.xml build hardcodes the IP address of node0 for webservices in output/resources.

<copy todir="${build.resources}/webservice" filtering="yes">
<fileset dir="${source.resources}/webservice">
<include name="*/"/>
</fileset>
<filterset>
<filter token="jbosstest.host.name" value="${node0}"/>
</filterset>
</copy>

So, once you run the jars target the first time, the intial value of node0 becomes hardcoded. IE, this doesn't work:

ant jars
ant tests -Dnode0=$MYTESTIP_1

instead you have to do this:

ant clean tests -Dnode0=$MYTESTIP_1

This is inefficient and error prone for developers. Instead, the filtering should be done at runtime using system properties in the configuration files and code:

${jbosstest.server.host:localhost} or System.getProperty("jbosstest.server.host" , "localhost")