[ns] Error in Direction of Pkt flow

["Madhan Mohan" <madhan80@eth.net>]

Hi

I get the following error

Direction of pkt-flow not specified; sending pkt up the stack on default

Please specify which file prints this error.  This will help me to debug my
program
( Note that the print message in bi-connector.cc is not the same message as
above)

Thank You
Madhan