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aircrack-ng channel problem under 12.04 LTS

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linux-howto

http://askubuntu.com – I would like to test security of my home wireless network, but I have lot of troubles with aircrack-ng. I am using 12.04 LTS, linux-3.2.0-27-generic-pae. My wireless card is BCM4311 (14e4:4311). Now airodump works fine, and packet\ injection too (aireplay-ng -9 wlan0), but when I want to send fake auth, I get this message wlan0 is on channel 11, but the AP uses channel 7 I tried to set channel with airmon and iwconfig, but it didn't help. I don't use any network manager, I have read, that it sometimes causes troubles. What can I do? Do I have to install some patches? (HowTos)