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The problem appears to be on the capture side. If the packets are captured with
airodump-ng 1.0, they're decoded flawlessly. And example packet captured with
airodump is in the file "good".
- Werner.
2009-02-03 06:12:22 UTC in The tcpdump project
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Update: the same problem also happens with packets captured with tcpdump 3.9.5 libpcap 0.9.5 from an RTL-8185L card (driver uses mac80211) on an old amd64 Gentoo system running Linux 2.6.29-rc2-00442-g152a649.
Out of 146815 captured beacons 584 (1/252.4) had the wrong channel. There were more anomalies I didn't look into since their origin is probably the same.
Decoding with tcpdump 3.9.5...
2009-01-31 20:42:49 UTC in The tcpdump project
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In case the problem is in the capture data, not the decoder:
The packet was captured by tcpdump 3.9.8 libpcap 0.9.8 on a WRT54GL v1.1 running Kamikaze 8.09 RC2.
Kernel is Linux 2.6.25.17. Kernel messages related to the driver:
b43-phy0: Broadcom 5352 WLAN found
b43-phy0 debug: Found PHY: Analog 2, Type 2, Revision 7
b43-phy0 debug: Found Radio: Manuf 0x17F, Version 0x2050, Revision 2...
2009-01-28 17:05:05 UTC in The tcpdump project
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tcpdump, as of commit 56a0f0167cb8ec4b9d01a0893a188fe748067f12, mis-parses this packet as follows:
10:53:26.145780 393466686us tsft 1.0 Mb/s 2432 MHz (0x0480) -19dB signal -52dB noise antenna 0 [0x0000000e] Beacon (wtest) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 196
0x0000: 83c1 e617 0000 0000 6400 0104 0005 7774
0x0010: 6573 7401 0882 848b 960c 1218 2403 0105.
2009-01-28 16:52:30 UTC in The tcpdump project
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almesber registered the M8C utilities project.
2006-03-01 12:42:26 UTC in M8C utilities
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almesber registered the LED Toy project.
2005-11-25 18:42:48 UTC in LED Toy
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almesber registered the kboot project.
2004-07-29 04:24:20 UTC in kboot
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almesber registered the ABISS project.
2004-06-17 17:26:55 UTC in ABISS
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almesber committed patchset 2 of module tcng to the Traffic Control - Next Generation CVS repository, changing 116 files.
2002-10-22 20:13:10 UTC in Traffic Control - Next Generation
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almesber committed patchset 1 of module tcng to the Traffic Control - Next Generation CVS repository, changing 116 files.
2002-10-22 20:13:10 UTC in Traffic Control - Next Generation
