Testsuite: using -Dipv6 should use an IPv6 multicast address for mod_cluster discovery

13:45:09,710 INFO  [org.jboss.modcluster] (ServerService Thread Pool -- 84) MODCLUSTER000001: Initializing mod_cluster version 2.0.0.Final
13:45:09,715 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 84) MSC000001: Failed to start service org.wildfly.mod_cluster.service.default.undertow: org.jboss.msc.service.StartException in service org.wildfly.mod_cluster.service.default.undertow: java.nio.channels.UnsupportedAddressTypeException
  at org.wildfly.clustering.service@27.0.0.Beta1-SNAPSHOT//org.wildfly.clustering.service.AsyncServiceConfigurator$AsyncService.lambda$start$0(AsyncServiceConfigurator.java:122)
  at org.jboss.threads@2.4.0.Final//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
  at org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1990)
  at org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
  at org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
  at java.base/java.lang.Thread.run(Thread.java:829)
  at org.jboss.threads@2.4.0.Final//org.jboss.threads.JBossThread.run(JBossThread.java:513)
Caused by: java.nio.channels.UnsupportedAddressTypeException
  at java.base/sun.nio.ch.Net.checkAddress(Net.java:142)
  at java.base/sun.nio.ch.DatagramChannelImpl.bindInternal(DatagramChannelImpl.java:808)
  at java.base/sun.nio.ch.DatagramChannelImpl.bind(DatagramChannelImpl.java:785)
  at org.jboss.mod_cluster.core@2.0.0.Final//org.jboss.modcluster.advertise.impl.DatagramChannelFactoryImpl.newChannel(DatagramChannelFactoryImpl.java:117)
  at org.jboss.mod_cluster.core@2.0.0.Final//org.jboss.modcluster.advertise.impl.DatagramChannelFactoryImpl.createDatagramChannel(DatagramChannelFactoryImpl.java:95)
  at org.jboss.mod_cluster.core@2.0.0.Final//org.jboss.modcluster.advertise.impl.AdvertiseListenerImpl.initializeDatagramChannel(AdvertiseListenerImpl.java:126)
  at org.jboss.mod_cluster.core@2.0.0.Final//org.jboss.modcluster.advertise.impl.AdvertiseListenerImpl.start(AdvertiseListenerImpl.java:142)
  at org.jboss.mod_cluster.core@2.0.0.Final//org.jboss.modcluster.advertise.impl.AdvertiseListenerImpl.<init>(AdvertiseListenerImpl.java:104)
  at org.jboss.mod_cluster.core@2.0.0.Final//org.jboss.modcluster.advertise.impl.AdvertiseListenerFactoryImpl.createListener(AdvertiseListenerFactoryImpl.java:38)
  at org.jboss.mod_cluster.core@2.0.0.Final//org.jboss.modcluster.ModClusterService.init(ModClusterService.java:162)
  at org.wildfly.mod_cluster.undertow@27.0.0.Beta1-SNAPSHOT//org.wildfly.mod_cluster.undertow.UndertowEventHandlerAdapterService.start(UndertowEventHandlerAdapterService.java:83)
  at org.wildfly.clustering.service@27.0.0.Beta1-SNAPSHOT//org.wildfly.clustering.service.AsyncServiceConfigurator$AsyncService.lambda$start$0(AsyncServiceConfigurator.java:117)
  ... 6 more