With CIDR, there are no such hard and fast rules. Instead subnet masks can be applied to any IP address to create the size of network that is needed. This is what I wanted and what I choose to do. You'll need to put this info on the YP server if that is the case. In my case YP is not running.
Broadcast packets go to all nodes on the network.
Typically, broadcast packets are used for address resolution and network management applications. Multicast packets are designed to be sent to a subset of nodes. However, the default setting for SunOS and for Solaris is different. R unsubscribe sun-managers S Or .