[ns] Generating packets on queue events

[Prajjwal Devkota]

Hi everyone,

I am thinking of generating packets on certain queue events.  The packets
would be:

   1. generated by the link layer (in real life, but not necessarily in
   ns-2, an approximation would do)
   2. processed by the link layer on the receiving end, and acted upon

I am thinking of this as one possible implementation of a project I am
trying to do, though I am looking at other approaches too. (Such as using
global variables in conjunction for timers: where I have a problem of waking
up intervals right now).