[ns] Backward compatibility mode problems

[Prashant Ratanchandani]

Dear all,
I had written some code for cbq links in a wireless
environment.However the code gives the following error
on running-

warning: using backward compatibility mode
backward compat bug: need to update classMap for UDP

can anyone tell me what this is and how i can solve
it.
Thanx in advance
Prashant

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