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Date: Sat, 07 Jun 2014 11:26:39 +0200
From: Stefan Ehmann <shoesoft@gmx.net>
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Subject: wlan0/iwn: no upload statistics
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Network monitoring tools show download traffic, but no upload data.

systat -ifstat output:
Interface           Traffic               Peak                Total
     wlan0  in      1.066 KB/s         16.155 KB/s          377.757 MB
            out     0.000 KB/s          0.000 KB/s            0.000 KB


Tested on amd64 CURRENT from few days ago.

netword Card is:
iwn0: <Intel Centrino Ultimate-N 6300> mem 0xf2000000-0xf2001fff irq 17
at device 0.0 on pci3