Clustering does not work in Linux/Unix with IPv6

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 5.1 EE SP4 (5.1.7), 5.2 EE SP2 (5.2.6)
• Fix Version/s: 5.1 EE SP5 (5.1.8), 5.2 EE SP3 (5.2.7)
• Component/s: Fault Tolerance > Clustering Framework
• Labels: None
• Environment: Linux/Unix

Clustering may not work in Linux/Unix environments with IPv6 enabled because JGroups does not work with IPv6. To fix this issue, add:
java.net.preferIPv4Stack=true
as a JVM startup parameter. If the above parameter is not set, a warning message will be added to the server logs.