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

       /FILE=file

    Optional.

    Specifies the name of the client's system image or other file to
    download upon request.

    o  By default, upon receiving a request, BOOTP looks for this
       file in TCPIP$TFTP_ROOT:[host], where host is the client's
       host name, excluding the domain.

    o  If this directory does not exist, BOOTP uses:

       TCPIP$TFTP_ROOT:[000000].

    o  When the TCP/IP Services software receives a boot request,
       BOOTP verifies the existence and size of this file.