"timfox" wrote : (Question: Given a JGroups address how do we know if it is on the same physical box as another JGroups address? If the machine has multiple NICs this may be tricky. Maybe we need to propagate some other kind of machine id in the state too? Or we propagate a list of NICs per box in the state.) This is quite easy to handle due to the java.net.NetworkInterface.getNetworkInterfaces() method, from which all addresses on the machine can be discovered. The o.j.cache.buddyreplication.NextMemberBuddyLocator.isColocated() method uses this. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3977664#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...