I am having trouble with a multihome setup.
Event though I am using dedicated bind addresses the JXMConnector fails
to start on the second instance. It looks to like as if the bind address
is just disregarded and instead binds to 0.0.0.0:

(1) Instance A (-b 192.168.0.101) started successfully
(2) Instance B (-b 192.168.0.102) logs:
17:41:37,489 ERROR [AbstractKernelController] Error installing to Start:
name=jboss.remoting:protocol=rmi,service=JMXConnectorServer state=Create
mode=Manual requiredState=Installed
java.io.IOException: Cannot bind to URL
[rmi://192.168.0.102:1090/jmxconnector]:
javax.naming.NameAlreadyBoundException: jmxconnector [Root exception is
java.rmi.AlreadyBoundException: jmxconnector]
at
javax.management.remote.rmi.RMIConnectorServer.newIOException(RMIConnectorServer.java:814)
at
javax.management.remote.rmi.RMIConnectorServer.start(RMIConnectorServer.java:431)
at
org.jboss.mx.remoting.service.JMXConnectorServerService.start(JMXConnectorServerService.java:110)

(3) [tdiesler@jbws jboss-5.0.0.Beta3]$ netstat -ln | grep 1090

tcp 0 0 0.0.0.0:1090 0.0.0.0:* LISTEN

The log is quiet misleading. It does actually bind to 0 0.0.0.0:1090.