Reference Manualsetp - set the NAT32 Primary InterfaceSYNOPSIS
setp [ifn]DESCRIPTION
When invoked with no argument, setp prints the current Primary Interface Number. When invoked with one argument, setp sets the current Primary Interface Number to ifn.NOTESThe altered setting is not recorded. To make the setting permanent, open the Interface Settings dialog box for the desired interface and then check the Main Internet Interface checkbox. Alternatively, the command can be placed in file startup.
The NAT32 Primary Interface is the default Internet-connected interface used to send and receive packets from the Internet.SEE ALSOWhen more than one Internet-connected interface has been configured, a specific interface selection algorithm can be set via the setis command.
netcfg setis sets