the default listener address is "*" or when setting it in the console or via JMX, an empty
string ("").
This will cause the WL Server instance to listen on all available interfaces on that box.
So, if you have a listen address specified, just replace it with an empty String.
When using the console, just leave that field blank, save and activate, then restart...
If you want to listen only on dedicated interfaces, configuring channels is the way forward.
Hope that helps.
Matt