Station sent an invalid association request?

[Otto Kekäläinen]

Hello,

2012/1/12 Mohammed Shafi <shafi.ath9k at gmail.com>:
>> 2012/1/12 Jouni Malinen <j at w1.fi>:
>>> Would it be possible for you to capture that Association Request frame
>>> with a sniffer (say, tcpdump or wireshark)? It would be interesting to
>>> see what exactly was wrong with it.
..
> 1.disable network manager
> 2. sudo iw dev wlan0 set type monitor
> 3. sudo iw dev wlan0 set channel 6 HT40+ 4. sudo ifconfig wlan0 up 5.
> sudo wireshark

Dump at http://otto.kekalainen.net/hostapd/wireshark.dump
My network is SSID Kotiverkko and AP machine mac is f4:ec:38:de:c8:d2.
The machine that fails to connect is 00:22:43:97:2f:9c.

My neighborhood has many wlans, so there's quite a lot of noise.

I also noticed that the failing laptop shows in its dmesg lines like below.
I don't know if it is related, but I don't recall seeing this while
using the old WLAN box.

[   42.309127] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[   43.965072] composite sync not supported
[   46.912134] composite sync not supported
[   72.309203] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[  112.312132] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[  162.312236] ===>rt_ioctl_giwscan. 7(7) BSS returned, data->length = 1047
[  217.632753] ===>rt_ioctl_giwscan. 7(7) BSS returned, data->length = 1047
[  217.634189] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  227.647458] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[  227.649707] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  237.666462] ===>rt_ioctl_giwscan. 7(7) BSS returned, data->length = 1047
[  237.667242] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  247.684480] ===>rt_ioctl_giwscan. 7(7) BSS returned, data->length = 1047
[  247.685318] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  257.702112] ===>rt_ioctl_giwscan. 7(7) BSS returned, data->length = 1047
[  257.702886] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  267.720211] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[  267.720920] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  489.827878] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[  489.828649] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  499.845172] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[  499.845833] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  509.861210] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[  509.861885] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  519.875584] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[  519.876395] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  529.893460] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[  529.894224] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  539.911780] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[  539.912520] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=6)
[  549.929293] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[ 1002.310034] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[ 1062.312742] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[ 1122.312520] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[ 1182.312374] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[ 1242.311417] ===>rt_ioctl_giwscan. 5(5) BSS returned, data->length = 776
[ 1302.312557] ===>rt_ioctl_giwscan. 5(5) BSS returned, data->length = 776
[ 1303.941536] IOCTL::unknown IOCTL's cmd = 0x00008b11
[ 1362.312519] ===>rt_ioctl_giwscan. 5(5) BSS returned, data->length = 776
[ 1422.312513] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904
[ 1482.314424] ===>rt_ioctl_giwscan. 5(5) BSS returned, data->length = 776
[ 1542.312432] ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 904