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

       /HOST=host

    Required. Default: None.

    If the proxy database has multiple entries with the same user
    name and UID, the NFS server selects the entry specified with
    this qualifier.