[ns] log statements in trace file

[Julie Wong <jw@erg.sri.com>]

Hi,

I have been running simulations based on a wireless simulation
in NS2.  I got the following statements in the trace file.  I was
wondering if anyone out there could take a quick glance at these
and perhaps give me hints as to why the IFq level might be deleting
these 0 size tcp packets.

My traffic model does not generate any tcp traffic.
So this is rather perplexing.

Thanks in advance,

Julie Wong

D 0.061870382 _4_ IFQ  --- 0 tcp 0 [0 ffffffff 4 800] ------- [4:0
-1:255 0 0] [0 0] 0 0
D 0.061898175 _46_ IFQ  --- 0 tcp 0 [0 ffffffff 2e 800] ------- [46:0
-1:255 0 0] [0 0] 0 0
D 0.061942907 _43_ IFQ  --- 0 tcp 0 [0 ffffffff 2b 800] ------- [43:0
-1:255 0 0] [0 0] 0 0
D 0.062015474 _37_ IFQ  --- 0 tcp 0 [0 ffffffff 25 800] ------- [37:0
-1:255 0 0] [0 0] 0 0
D 0.062022403 _23_ IFQ  --- 0 tcp 0 [0 ffffffff 17 800] ------- [23:0
-1:255 0 0] [0 0] 0 0
D 0.062094032 _49_ IFQ  --- 0 tcp 0 [0 ffffffff 31 800] ------- [49:0
-1:255 0 0] [0 0] 0 0
D 0.062105378 _2_ IFQ  --- 0 tcp 0 [0 ffffffff 2 800] ------- [2:0
-1:255 0 0] [0 0] 0 0
D 0.062120214 _18_ IFQ  --- 0 tcp 0 [0 ffffffff 12 800] ------- [18:0
-1:255 0 0] [0 0] 0 0
D 0.062136637 _39_ IFQ  --- 0 tcp 0 [0 ffffffff 27 800] ------- [39:0
-1:255 0 0] [0 0] 0 0
D 0.062180101 _44_ IFQ  --- 0 tcp 0 [0 ffffffff 2c 800] ------- [44:0
-1:255 0 0] [0 0] 0 0
D 0.062186901 _14_ IFQ  --- 0 tcp 0 [0 ffffffff e 800] ------- [14:0
-1:255 0 0] [0 0] 0 0
D 0.062206807 _42_ IFQ  --- 0 tcp 0 [0 ffffffff 2a 800] ------- [42:0
-1:255 0 0] [0 0] 0 0
D 0.062246244 _7_ IFQ  --- 0 tcp 0 [0 ffffffff 7 800] ------- [7:0
-1:255 0 0] [0 0] 0 0