Bug#386090: [pkg-wpa-devel] Bug#386090: wpasupplicant: no association to unencrypted network

[Marc Haber]

On Sat, Sep 09, 2006 at 10:59:05AM +1000, Kel Modderman wrote:
> Take some info from 'wpa_cli -i eth1 status' or 'iwconfig eth1' during and 
> after attempted association. 

I do not have "auto eth1" in my /e/n/i. Thus, the default replies are:

$ sudo wpa_cli -i eth1 status
Failed to connect to wpa_supplicant - wpa_ctrl_open: No such file or directory
$ sudo iwconfig eth1
eth1      unassociated  ESSID:off/any
          Mode:Managed  Channel=0  Access Point: Not-Associated
          Bit Rate=0 kb/s   Tx-Power=20 dBm   Sensitivity=8/0
          Retry limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:21   Missed beacon:0


When the train came in range of the station, my interface associated
with the Hotspot without wpa_supplicant interfering:
$ sudo iwconfig eth1
eth1      IEEE 802.11g  ESSID:"T-Mobile_T-Com"
          Mode:Managed  Frequency:2.412 GHz  Access Point: 00:14:F2:7E:25:00
          Bit Rate=54 Mb/s   Tx-Power=20 dBm   Sensitivity=8/0
          Retry limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=58/100  Signal level=-67 dBm  Noise level=-84 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:83   Missed beacon:9
$

I then started up the interface, and the interface immediately lost
association:
$ sudo ifup eth1
$ sudo iwconfig eth1
eth1      unassociated  ESSID:off/any
          Mode:Managed  Channel=0  Access Point: Not-Associated
          Bit Rate=0 kb/s   Tx-Power=20 dBm   Sensitivity=8/0
          Retry limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:84   Missed beacon:0

$ sudo wpa_cli -i eth1 status
wpa_state=DISCONNECTED

A minute later, wpa_supplicant tried to associate to my home network:
$ sudo wpa_cli -i eth1 status
wpa_state=ASSOCIATING
$ sudo iwconfig eth1
eth1      unassociated  ESSID:"my-home-network"
          Mode:Managed  Channel=0  Access Point: Not-Associated
          Bit Rate=0 kb/s   Tx-Power=20 dBm   Sensitivity=8/0
          Retry limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:84   Missed beacon:0

This, of course, timed out. Next network on list is
girlfriends-home-network:
$ sudo wpa_cli -i eth1 status
wpa_state=ASSOCIATING
$ sudo iwconfig eth1
eth1      unassociated  ESSID:"girlfriends-home-network"
          Mode:Managed  Channel=0  Access Point: Not-Associated
          Bit Rate=0 kb/s   Tx-Power=20 dBm   Sensitivity=8/0
          Retry limit:7   RTS thr:off   Fragment thr:off
          Encryption key:D119-901E-8776-3016-3324-7E0E-49   Security mode:open
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:84   Missed beacon:0

This timed out, as well, and wpa_state changed to SCANNING:
$ sudo wpa_cli -i eth1 status
wpa_state=SCANNING
$ sudo iwconfig eth1
eth1      unassociated  ESSID:"girlfriends-home-network"
          Mode:Managed  Channel=0  Access Point: Not-Associated
          Bit Rate=0 kb/s   Tx-Power=20 dBm   Sensitivity=8/0
          Retry limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:84   Missed beacon:0

I then decided to shut down the interface:
$ sudo wpa_action eth1 stop
Stopped wpa_cli (pid 4249).
ifdown eth1
$ sudo wpa_cli -i eth1 status
Failed to connect to wpa_supplicant - wpa_ctrl_open: No such file or directory
$ sudo wpaiwconfig eth1
eth1      unassociated  ESSID:"girlfriends-home-network"
          Mode:Managed  Channel=0  Access Point: Not-Associated
          Bit Rate=0 kb/s   Tx-Power=20 dBm   Sensitivity=8/0
          Retry limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:84   Missed beacon:0

I would have expected wpa_supplicant to deconfigure the interface
before shutting down. So I decided to deconfigure it manually, and it
immediately associated to the Hotspot again:
$ sudo iwconfig eth1 essid any
$ sudo iwconfig eth1
eth1      IEEE 802.11g  ESSID:"T-Mobile_T-Com"
          Mode:Managed  Frequency:2.412 GHz  Access Point: 00:14:69:04:DB:20
          Bit Rate=54 Mb/s   Tx-Power=20 dBm   Sensitivity=8/0
          Retry limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=75/100  Signal level=-52 dBm  Noise level=-85 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:89   Missed beacon:7

That came kind of as a surprise, since this didn't work the last times
I tried.

Why didn't the interface associate to the hotspot with wpa_supplicant
running?

Greetings
Marc

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