Not sure if this will work, but stop JBossAS and delete the server/xxx/data, server/xxx/tmp and server/xxx/work directories and restart JBossAS. If the problem still persists, then the old IP address is not being cached by JBossAS, in which case either the JVM or the operating system is caching the name. Given that you can ping correctly (I assume you did the ping from the same machine running JBossAS), you can probably rule out the OS, which leaves you with the JVM as the culprit. Let me know how it goes. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4160378#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...