Packet drop in aodv ns2 ?

Packet drop in aodv ns2 ?

     >  Packet drop can be done in two ways,

                i)  drop(p) or drop(p , DROP_RTR_NO_ROUTE)

                         >  In cmu-trace.h ( ns-2.35/trace ), you can find different kind of packet drop.

                ii)  Packet::free(p)

                         >  In packet.h ( ns-2.35/common ), you can find the free() function.

                         >  Note, free() is not the same as drop(). If you use free() function to drop a packet then you cannot see a packet drop in nam.