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Copyright \(co 1987, Massachussetts Institute of Technology
All rights reserved.
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Permission to use, copy, modify, and distribute this document for any purpose
and without fee is hereby granted, provided that the above copyright notice
appear in all copies and that both that copyright notice and this permission
notice are retained, and that the name of M.I.T. not be used in advertising or
publicity pertaining to this document without specific, written prior
permission.  M.I.T. makes no representations about the suitability of this
document or the protocol defined in this document for any purpose.  It is
provided "as is" without express or implied warranty.
