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

       /ADDRESS=IP_address

    Optional. Default: None.

    Allows you to select a host by IP address.

    o  If a host has more than one IP address and you specify the
       name, all IP addresses and aliases for the host are displayed.

    o  If a host has multiple IP addresses and you specify an alias
       that is defined on multiple IP addresses, only the first IP
       address and aliases are displayed.

    o  Recommended: Use the host parameter instead of this qualifier.