[ https://issues.redhat.com/browse/WFLY-9641?page=com.atlassian.jira.plugin... ] Gregory Hall commented on WFLY-9641: ------------------------------------ I'm trying to cluster keycloak 6.0.1 based on Wildfly 16 in a docker container and having this issue. I've been setting external addresses on all the JGroups TCPPING protocol options. Not sure what the best tactic as using 0.0.0.0 inside a container is definitely preferred. The basic pretense that the ejb cluster would second guess routability through an inadequate test sounds wrong. Due to NAT with/without docker containers and networks, the best practice would be to try to connect and if you throw a NoRouteToHost, deal with that. -- This message was sent by Atlassian Jira (v7.13.8#713008)