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How can I enable master mode on ath9k driver, so that I can use my ubuntu machine as an wireless access point. The wireless card is: AR2427. The following command returns an error: sudo ip link set dev wlan0 down && sudo iwconfig wlan0 mode master

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I got it working. Here is the tutorial I wrote:

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Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. – Mark Henderson Jun 19 '12 at 5:37

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