vamossagar12 commented on code in PR #13720:
URL: https://github.com/apache/kafka/pull/13720#discussion_r1193755075


##########
tools/src/test/java/org/apache/kafka/tools/JmxToolTest.java:
##########
@@ -325,11 +327,15 @@ public void dateFormat() {
     }
 
     private static JMXConnectorServer startJmxAgent(int port) throws Exception 
{
+        // explicitly set the hostname returned to the the clients in the 
remote stub object
+        // when connecting to a multi-homed machine using RMI, the wrong 
address may be returned
+        // by the RMI registry to the client, causing the connection to the 
RMI server to timeout
+        System.setProperty("java.rmi.server.hostname", "localhost");
         LocateRegistry.createRegistry(port);
         Map<String, Object> env = new HashMap<>();
         env.put("com.sun.management.jmxremote.authenticate", "false");
         env.put("com.sun.management.jmxremote.ssl", "false");
-        JMXServiceURL url = new 
JMXServiceURL(String.format("service:jmx:rmi:///jndi/rmi://:%d/jmxrmi", port));
+        JMXServiceURL url = new JMXServiceURL(format(JMX_URL_TEMPLATE, port));

Review Comment:
   minor nit: Is it possible to reuse the `jmxUrl` object created in 
`beforeAll`? The object passed in the `JMXServiceURL` seems to be the same as 
`jmxUrl`.



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