Library /sys$common/syshlp/tcpip$ucp_help.hlb SET, COMMUNICATION, Qualifiers, /LOCAL_HOST  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /LOCAL_HOST=host

    Optional.

    Defines the following logical names for the local host:

    o  TCPIP$INET_HOST=host-name

       This logical is always set with the primary host name even if
       the alias name was specified as host.

    o  TCPIP$INET_HOSTADDR=host-IP-address

       If the local host has multiple IP addresses, this logical
       name is set with a name for each address, called TCPIP$INET_
       HOSTADDRn, where n is a number starting at 2.

    This qualifier requires either SYSPRV or BYPASS privilege.