[ns] Agent::recv method not reached

[Sita S. Krishnakumar]

Hello,
I am trying to add a new routing protocol to ns-2. There are packets being
generated and received by the nodes (i see it in the MAC trace), but it
never reaches my recv() method. On stepping through, I saw that the
Agent::recv() is not reached and hence it is not getting forwarded to my
code for processing (no agent traces get printed out in the trace file
about packets being received) . Any ideas on why this is happening?
Thanks for your help.
Regards,
Sita