[ns] necessary update at Marc Greis tutorial

[Sarvesh Kumar]

Hi,

Implementation of a new protocol worked for me without
making the changes in ns-packet.tcl.I don't know what
the changes in ns-packet.tcl imply but it worked for
me without those changes.

Thanks,
Sarvesh

---------------------------------------------------------
Sarvesh Kumar Varatharajan    
235 Nichols,The University of Kansas  
sarvesh@{ittc|eecs}.ku.edu     
Electrical Engineering & Computer Science
Work Phone-785-864-7122


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