A bug! I added and modified a couple of rows in run.sh to get around it: #fix for bug (Linux cannot bound a socket to an IPv6 address) JAVA_OPTS2="-Djava.net.preferIPv4Stack=true" # Setup JBoss sepecific properties JAVA_OPTS="-Dprogram.name=$PROGNAME $JAVA_OPTS $JAVA_OPTS2" ...more info here: http://wiki.jboss.org/wiki/Wiki.jsp?page=IPv6 And no, Mustang did not fix it for me. /Jens View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3993129#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...