[ https://issues.jboss.org/browse/JGRP-2343?page=com.atlassian.jira.plugin.... ] Bela Ban commented on JGRP-2343: -------------------------------- This is the new algorithm: h4. Only IPv4 is available * IPv4 addresses are created by default (e.g. by {{InetAddress.getByName()}}, or {{site_local}}) * When an IPv6 address is defined in a configuration, an exception is thrown and the stack will not start h4. Only IPv6 is available * IPv6 addresses are created by default * When an IPv4 address is created, convert it to an IPv6-mapped address (default behavior) h4. Both IPv4 and IPv6 stacks are available (dual stack) * If {{java.net.preferIPv4Stack=true}}: ** Assign IPv4 addresses by default ** When an IPv6 address is encountered, throw an exception and don't start the stack * If {{java.net.preferIPv6Addresses=true}}: ** Assign IPv6 addresses by default ** When an IPv4 address is encountered, convert it to an IPv6-mapped address (default behavior) * Both {{java.net.preferIPv4Stack}} and {{java.net.preferIPv6Addresses}} are set, or none are set ** What's the JDK's preference? (check!) Try to implement the same preference! ** If we have a single IPv6 address (dotted-decimal or symbolic name resolved to IPv6) in the configuration -> Assign IPv6 addresses ** Otherwise -> use IPv4 addresses -- This message was sent by Atlassian Jira (v7.12.1#712002)