JGroups 4.0.16

I just released 4.0.16. The most important features/bug fixes are (for a comprehensive list see [1]):

• Better mechanism to detect whether IPv4 or IPv6 addresses need to be used. This eliminates the need to use java.net.preferIPv4Stack (unless forcing the use of IPv4 addresses)
• https://issues.jboss.org/browse/JGRP-2305
• Due to a regression, MULTI_PING didn't work any longer. This was fixed in https://issues.jboss.org/browse/JGRP-2319
• Bug fixes in DNS_PING (used for running in Kubernetes/Openshift clouds): 
• https://issues.jboss.org/browse/JGRP-2296
• https://issues.jboss.org/browse/JGRP-2300
• https://issues.jboss.org/browse/JGRP-2314
• https://issues.jboss.org/browse/JGRP-2316
• https://issues.jboss.org/browse/JGRP-2309
• ASYM_ENCRYPT
• Pooled ciphers were not correctly re-initialized: https://issues.jboss.org/browse/JGRP-2279
• Concurrent access to pooled ciphers can lead to decryption errors: https://issues.jboss.org/browse/JGRP-2315
• FILE_PING (and all subclasses, e.g. S3_PING) had an issue with merging: https://issues.jboss.org/browse/JGRP-2288
• slf4j doesn't work: https://issues.jboss.org/browse/JGRP-2307
• LazyThreadFactory leaks threads: https://issues.jboss.org/browse/JGRP-2312
• TransferQueueBundler (default): view changes lead to dropping of messages to non-members; leading to issues such as delaying the leaving of a member: https://issues.jboss.org/browse/JGRP-2324

Enjoy!

[1] https://issues.jboss.org/projects/JGRP/versions/12339241