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BOOTP vendor information extensions RFC ( Request for Comments ) 1048, February 1988. This memo proposes an addition to the Bootstrap Protocol ( BOOTP ). Bootstrap Protocol ( BOOTP ) is a UDP/IP-based protocol that allows a booting host to configure itself dynamically, and more significantly, without user supervision. It provides a means to assign a host its IP address, a file from which to download a boot program from some server, that server's address, and (if present) the address of an Internet gateway. The full description of the BOOTP request/reply packet format may be found in RFC-951. The rest of this document will concern itself with the last field of the packet, a 64 octet area reserved for vendor information, to be used in a hitherto unspecified fashion. As suggested in RFC-951, the first four bytes of this field have been assigned to the magic cookie, which identifies the mode in which the succeeding data is to be interpreted. The value of the magic cookie is the 4 octet dotted decimal 99.130.83.99 ( or hexadecimal number 63.82.53.63 ) in network byte order. The vendor information field has been implemented as a free format, with extendable tagged sub-fields. Some examples: Subnet-Mask Option 1, length 4: 255.255.255.0; Hostname Option 12, length 4: "MyPC".
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