simulations do not run without tracing (SunOS)

[Sergey Gorinsky <gorinsky@cs.utexas.edu>]

  Hi,

  I am running experiments with FQ links where individual RED queues.
When I disable tracing, the following error is reported. How can I
avoid this problem (the best what I achieved for speeding up my
simulations was writing the trace to /dev/null)?

  Thank you,

  Sergey

ns: _o24 unknown-flow 513 769 0 0: can't read "drpT_": no such variable
    while executing
"$q drop-target $drpT_"
    (procedure "_o19" line 12)
    (FQLink new-flow line 12)
    invoked from within
"$fq_ new-flow $src $dst $fid"
    (procedure "_o24" line 3)
    (Classifier/Hash/Fid/FQ unknown-flow line 3)
    invoked from within
"_o24 unknown-flow 513 769 0 0"