Hi Kristian, Thanks for reporting on this. I've opened in issue in Apache Ignite JIRA https://issues.apache.org/jira/browse/IGNITE-3011
As a workaround as you already noted you can set -Djava.net.preferIPv4Stack=true to JVM upon startup. Other solution that may work in your case is to set a host address to use for network communications explicitly in configuration using IgniteConfiguration.setLocalHost method. So if Mac node's IP address would be "10.123.24.25" and Linux's one "11.123.24.25" then in the configuration of Mac node you should set IgniteConfiguration.setLocalHost("10.123.24.25") and in Linux's one IgniteConfiguration.setLocalHost("11.123.24.25"). -- Denis -- View this message in context: http://apache-ignite-users.70518.x6.nabble.com/Pecuilar-loopback-address-on-Mac-seems-to-break-cluster-of-linux-and-mac-tp4156p4210.html Sent from the Apache Ignite Users mailing list archive at Nabble.com.