Added by Jan Klaban <xklaban@quick.cz> and Sven Ubik <ubik@cesnet.cz>:

NIST Net originally provides only random packet loss and the queue length 
can not be specified. For demonstration of reaction of congestion control
algorithms to packet losses, it can be useful to generate packet losses
periodically, rather than randomly. Also, it can be useful if the queue
length can be specified so that we know when to expect loss due to queue
overflow.

Added cnistnet options:

    --cdrop <n>           Will drop one packet each n microseconds,
                          n=0 disables this type of packet loss.

    --glen <n>            Sets queue length to n packets,
                          n=0 disables specified queue length
                          (returns to default NIST Net behaviour of
                          unspecified queue length).
                          
Modified files: 

    cli/cnistnet.c
    include/nistnetutil.h
    include/nistnet_table.h
    include/nistnet.h
    kernel/knistnet.c
    lib/nistnetutil.c

October 27, 2003.