[ns] 12ms

[Apu Kapadia <akapadia@uiuc.edu>]

I haven't been getting responses to this problem, and I believe this is
important. 

12ms seems to be an important time interval in NS. Whenever I try to run
simulations with a granularity of under 12ms (for example, timers that
trigger event every x microseconds), I get segmentation faults. Also, I
noticed that when TCP sent data as fast as possible, the time between two
sends was 12ms. 

Is this an NS quirk?

Thanks,
Apu