[ih] TCP options: Bubba and Skeeter

[Christos Papadopoulos]

Hi everyone,

one of my students stumbled accross this one. Look at option
kind numbers 16 and 17 below.  Anyone knows the history behind it?

Christos Papadopoulos
Assistant Professor
Department of Computer Science                  Voice: (213) 740-4780
University of Southern California               FAX:   (213) 740-7285 
941 W. 37th Place                               email: christos at isi.edu
SAL 238
Los Angeles, CA 90089-0781



----- Forwarded message from Gina Fisk -----

Options 16 and 17:

http://www.iana.org/assignments/tcp-parameters


TCP OPTION NUMBERS

The Transmission Control Protocol (TCP) has provision for optional
header fields identified by an option kind field.  Options 0 and 1 are
exactly one octet which is their kind field.  All other options have
their one octet kind field, followed by a one octet length field,
followed by length-2 octets of option data.

Kind   Length   Meaning                           Reference
----   ------   -------------------------------   ---------
  0        -    End of Option List                 [RFC793]
  1        -    No-Operation                       [RFC793]
  2        4    Maximum Segment Size               [RFC793]
  3        3    WSOPT - Window Scale              [RFC1323]
  4        2    SACK Permitted                    [RFC2018]
  5        N    SACK                              [RFC2018]
  6        6    Echo (obsoleted by option 8)      [RFC1072]
  7        6    Echo Reply (obsoleted by option 8)[RFC1072]
  8       10    TSOPT - Time Stamp Option         [RFC1323]
  9        2    Partial Order Connection Permitted[RFC1693]
 10        3    Partial Order Service Profile     [RFC1693]
 11             CC                                [RFC1644]
 12             CC.NEW                            [RFC1644]
 13             CC.ECHO                           [RFC1644]
 14         3   TCP Alternate Checksum Request    [RFC1146]
 15         N   TCP Alternate Checksum Data       [RFC1146]
 16             Skeeter                           [Knowles]
 17             Bubba                             [Knowles]
 18         3   Trailer Checksum Option    [Subbu & Monroe]
 19        18   MD5 Signature Option              [RFC2385]
 20             SCPS Capabilities                   [Scott]
 21		Selective Negative Acknowledgements [Scott]
 22		Record Boundaries                   [Scott]
 23		Corruption experienced              [Scott]
 24		SNAP				 [Sukonnik]
 25		Unassigned (released 12/18/00)
 26             TCP Compression Filter           [Bellovin]

----- End of forwarded message from Gina Fisk -----