TCPIP.DATA search order

The TCP/IP stack's configuration component uses the TCPIP.DATA configuration file during TCP/IP stack initialization to determine the stack's host name. To find the TCPIP.DATA information, the z/OS® UNIX environment search order is used. For a description of this search order, see Search orders used in the z/OS UNIX environment. This host name value is the value that is returned on gethostname socket function calls processed by this stack.

For details on the z/OS UNIX environment and native MVS™ environment search orders and the usage of z/OS UNIX environment variables, see Resolver configuration files.