The IPv6 loopback addresss ::1 cannot be parsed. I suspect this also fails for regular IPv6 addresses.
The stack trace is:

04:18:33,829 ERROR [STDERR] Exception in thread "pool-5-thread-1" java.lang.NumberFormatException: For input stri
ng: ":1:8000"
04:18:33,829 ERROR [STDERR] at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
04:18:33,830 ERROR [STDERR] at java.lang.Integer.parseInt(Integer.java:481)
04:18:33,830 ERROR [STDERR] at java.lang.Integer.parseInt(Integer.java:514)
04:18:33,830 ERROR [STDERR] at org.jboss.modcluster.Utils.parseSocketAddress(Utils.java:115)
04:18:33,830 ERROR [STDERR] at org.jboss.modcluster.Utils.parseSocketAddress(Utils.java:76)
04:18:33,830 ERROR [STDERR] at org.jboss.modcluster.advertise.impl.AdvertiseListenerImpl$AdvertiseListenerWor
ker.run(AdvertiseListenerImpl.java:505)
04:18:33,830 ERROR [STDERR] at java.lang.Thread.run(Thread.java:636)