The z/OS UNIX ipsec command stackname options

-p stackname
Selects a local stack. The stackname parameter specifies the name of the TCP/IP address space. If the -p option is not specified, the default stack is selected. The default stack refers to the default TCP/IP address space that is specified on the TCPIPJOBNAME statement in the resolver configuration data set.
-z nsclientname
Selects a NSS client. The nsclientname parameter specifies the name of a NSS client as specified on the ClientName parameter for the NssStackConfig statement in the IKED.CONF file on the client system. If not specified on the NssStackConfig statement, it defaults to the form of systemname_stackname. To produce a list of available NSS clients, issue the ipsec -x command. There is no default for this parameter.