Take a look at it or read the RFC if you need more details . This option is a comma delimited list of strings indicating the only scopes a UA or SA is allowed when making requests or registering or the scopes a DA must support. Allows administrator to force UA and SA agents to use specific DAs. If this setting is not used dynamic DA discovery will be used to determine which DAs to use. Default is to use dynamic DA discovery.
Force broadcasts to be used instead of multicast.
This setting is seldom necessary since OpenSLP will automatically use broadcast if multicast is unavailable. Default is false. Default is true. If the property is set to zero, active discovery is turned off. This is useful when the DAs available are explicitly restricted to those obtained from DHCP or the net.slp.DAAddresses property.