Scan networks in AP mode (hostapd)

Question

I want to scan networks when our devices is in Access Point. When the device is in client mode, it works, but i cannot scan networks if hostapd is running as Access Point:

Try 1:

pi $ sudo iwlist wlan0 scan
wlan0     Interface doesn't support scanning : Operation not supported

Try 2:

pi $ sudo iw dev wlan0 scan
command failed: Operation not supported (-95)

Any ideas?

Can you post the dmesg logs? (`sudo dmesg -c` first, then run your command, then post the logs when running `dmesg`) — artm, Sep 08 '15 at 12:55

score 2 · Answer 1 · answered Jan 27 '16 at 05:29

2

On Raspberry PI/wheezy, you may need to get the libnl library:

apt-get install libnl-dev

answered Jan 27 '16 at 05:29

Qiang Li

1,099
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score 2 · Answer 2 · answered Dec 26 '16 at 14:52

2

I had the same problem. So I added ap-force to the command:

sudo iw dev wlan0 scan ap-force

and that worked for me.

answered Dec 26 '16 at 14:52

anissmag

21
3

score 1 · Answer 3 · answered Sep 09 '15 at 13:30

1

SOLUTION:

Download iw v4.X from: https://kernel.org/pub/software/network/iw/

Compile it and run:

./iw dev wlan0 scan ap-force

it works!

answered Sep 09 '15 at 13:30

Kotik_o

295
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Scan networks in AP mode (hostapd)

3 Answers3