You see the following error message:
Request to access nonexistent dhcp_network database: database_name in datastore: nisplus_datastore.
Verification: The dhcpconfig script did not create a dhcp_network table for a subnet during the configuration of the DHCP server. This can happen if you set up an isolated LAN, such as a server and two clients, as a test network.
Solution: Use the dhcpconfig command to initialize the dhcp_network table and new IP addresses.