Get rid of need for java.net.preferIPv4Stack -------------------------------------------- Key: JGRP-2305 URL: https://issues.jboss.org/browse/JGRP-2305 Project: JGroups Issue Type: Enhancement Reporter: Bela Ban Assignee: Bela Ban Priority: Major Fix For: 4.0.16 New address picking scheme: * First we detect which addresses are available: IPv4 and/or IPv6 (dual-stack if both) * When we encounter an IPv4 address: ** If dual-stack or IPv4 stack: use it ** If IPv6-only stack: use it unless it is a class D (multicast) address: then convert it to an IPv6-mapped address * When we encounter an IPv6 address: ** If dual-stack or IPv6-only stack: use it ** Else: throw an exception (IPv6 address in an IPv4-only stack)