Hi Howard,
build.xml in test folder in the JBM 1.4.x contains hardcoded java.net.preferIPv4Stack or this parameter is missing in several test's profiles. This causes problems in IPv6 testing. Please, could you fix it?

Problem a)
Test's configuration contains:
<property name="java.net.preferIPv4Stack" value="true"/>

Problem b)
This configuration value is missing in test's configuration.

Should be fixed as:
<sysproperty key="java.net.preferIPv4Stack" value="${java.net.preferIPv4Stack}" /> for all test's configurations