I'm a bit puzzled by the documentation for the WLC concerning the service-port interface.
In the "WLC and LAP basic configuration example" documentation it is said: "If you do not want to use the service port, enter 0.0.0.0 for the IP address and netmask."
But in the "WLC Configuration Best Practices" it is said: "Do not leave an interface with a 0.0.0.0 address, for example an unconfigured service port. It might affect DHCP handling in the controller."
So, can I leave 0.0.0.0 on the service port or not?