The remote procedure call to the Global Location Broker Daemon (GLBD) did not include any active address families. The Berkeley socket concept is used for the Network Computing System, of which the GLBD is a part. It can listen to more than one socket identified by a socket address composed of an address family, which defines the structure of the address, the network (host) address, and port number (endpoint address). Without an active address family, the GLBD is unable to receive requests over a connection.