wpa_supplicant not found AP without SSID in beacon packet

From: Borodin Oleg <ziggi_at_yandex.ru>
Date: Sun, 06 Sep 2009 22:31:35 +0300
Hi!

wpa_supplicant "not found" AP without SSID in beacon packets. With same 
device and configuration, but FreeBSD7.2 - work without problems.

uname:
FreeBSD flashbsd.home 8.0-BETA3 FreeBSD 8.0-BETA3 #4 r196775: Thu Sep  3 
13:12:37 EEST 2009
    ziggi_at_eee.home:/usr/obj/usr/src/sys/EEE04  i386

wireless device:
ath0: <Atheros 5424/2424> mem 0xfbef0000-0xfbefffff irq 18 at device 0.0 
on pci1
ath0_at_pci0:1:0:0:        class=0x020000 card=0x10261a3b chip=0x001c168c 
rev=0x01 hdr=0x00
    vendor     = 'Atheros Communications Inc.'
    device     = 'AR5006 family 802.11abg Wireless NIC'
    class      = network
    subclass   = ethernet

Access point - Cisco 877w, IOS 12.4T8

----------- Variant 1. SSID not send in beacon packets from Cisco access 
point -
Cisco conf fragment :
!
dot11 mbssid
!
dot11 ssid WNET1
   vlan 1
   authentication open.
   authentication key-management wpa
   wpa-psk ascii 7 10682F4857474B2D2A
!
dot11 ssid WNET2
   vlan 2
   authentication open.
   authentication key-management wpa
   wpa-psk ascii 7 15342D5D567A72020E
!
dot11 ssid WNET3
   vlan 3
   authentication open.
   authentication key-management wpa
   wpa-psk ascii 7 0220220A595656076A
!

Result FreeBSD8Beta3 wpa_suplicant & wlandebug:

Starting AP scan (broadcast SSID)
wlan0: ieee80211_ioctl_scanreq: flags 0x52 duration 0x7fffffff mindwell 
0 maxdwe
ll 0 nssid 0
wlan0: ieee80211_check_scan: active scan, append, nojoin, once
wlan0: sta_pick_bss: no scan candidate
wlan0: start_scan_locked: active scan, duration 2147483647 mindwell 0 
maxdwell 0
, desired mode auto, append, nojoin, once
wlan0: scan set 1g, 6g, 11g, 7g, 13g, 2g, 3g, 4g, 5g, 8g, 9g, 10g, 12g, 
14b dwel
l min 20ms max 200ms
wlan0: scan_task: chan   3g ->   1g [active, dwell min 20ms max 200ms]
wlan0: send probe req on channel 1 bssid ff:ff:ff:ff:ff:ff ssid ""
wlan0: received beacon from 00:23:5e:75:f7:c0 rssi 45
wlan0: [00:23:5e:75:f7:c0] discard unhandled information element, id 
133, len 30 <-------- ????

wlan0: [00:23:5e:75:f7:c0] discard beacon frame, for off-channel 3
wlan0: received beacon from 00:23:5e:75:f7:c2 rssi 44
wlan0: [00:23:5e:75:f7:c2] discard unhandled information element, id 
133, len 30

wlan0: [00:23:5e:75:f7:c0] discard beacon frame, for off-channel 3
wlan0: received beacon from 00:23:5e:75:f7:c2 rssi 46
wlan0: [00:23:5e:75:f7:c2] discard unhandled information element, id 
133, len 30

wlan0: [00:23:5e:75:f7:c2] discard beacon frame, for off-channel 3
wlan0: scan_task: chan   1g ->   6g [active, dwell min 20ms max 200ms]
wlan0: send probe req on channel 6 bssid ff:ff:ff:ff:ff:ff ssid ""
wlan0: scan_task: chan   6g ->  11g [active, dwell min 20ms max 200ms]
wlan0: send probe req on channel 11 bssid ff:ff:ff:ff:ff:ff ssid ""
wlan0: scan_task: chan  11g ->   7g [active, dwell min 20ms max 200ms]
wlan0: send probe req on channel 7 bssid ff:ff:ff:ff:ff:ff ssid ""
wlan0: scan_task: chan   7g ->  13g [passive, dwell min 20ms max 200ms]
EAPOL: disable timer tick
wlan0: scan_task: chan  13g ->   2g [active, dwell min 20ms max 200ms]
wlan0: send probe req on channel 2 bssid ff:ff:ff:ff:ff:ff ssid ""
wlan0: received beacon from 00:23:5e:75:f7:c1 rssi 56
wlan0: [00:23:5e:75:f7:c1] discard unhandled information element, id 
133, len 30
...
[00:23:5e:75:f7:c1] new beacon on chan 3 (bss chan 3) 0x00 rssi 55
[00:23:5e:75:f7:c1] caps 0x431 bintval 100 erp 0x100
wlan0: received beacon from 00:23:5e:75:f7:c2 rssi 53
wlan0: [00:23:5e:75:f7:c2] discard unhandled information element, id 
133, len 30

[00:23:5e:75:f7:c2] new beacon on chan 3 (bss chan 3) 0x00 rssi 53
[00:23:5e:75:f7:c2] caps 0x431 bintval 100 erp 0x100
wlan0: scan_task: chan   3g ->   4g [active, dwell min 20ms max 200ms]
wlan0: send probe req on channel 4 bssid ff:ff:ff:ff:ff:ff ssid ""
wlan0: received beacon from 00:23:5e:75:f7:c2 rssi 52
wlan0: [00:23:5e:75:f7:c2] discard unhandled information element, id 
133, len 30
...
Scan results: 3
CTRL-EVENT-SCAN-RESULTS
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:23:5e:75:f7:c1 ssid='' wpa_ie_len=24 rsn_ie_len=0 caps=0x31
   skip - SSID mismatch
1: 00:23:5e:75:f7:c2 ssid='' wpa_ie_len=24 rsn_ie_len=0 caps=0x31
   skip - SSID mismatch
2: 00:23:5e:75:f7:c0 ssid='' wpa_ie_len=24 rsn_ie_len=0 caps=0x31
   skip - SSID mismatch
Try to find non-WPA AP
0: 00:23:5e:75:f7:c1 ssid='' wpa_ie_len=24 rsn_ie_len=0 caps=0x31
   skip - SSID mismatch
1: 00:23:5e:75:f7:c2 ssid='' wpa_ie_len=24 rsn_ie_len=0 caps=0x31
   skip - SSID mismatch
2: 00:23:5e:75:f7:c0 ssid='' wpa_ie_len=24 rsn_ie_len=0 caps=0x31
   skip - SSID mismatch
No suitable AP found. <---------------------
Setting scan request: 5 sec 0 usec

---------------- 2 On _any_ SSID in beacon packet:

dot11 ssid WNET1
   vlan 1
   authentication open
   authentication key-management wpa
   mbssid guest-mode  <--------------------------- On SSID sending
   wpa-psk ascii 7 10682F4857474B2D2A
!
dot11 ssid WNET2
   vlan 2
   authentication open
   authentication key-management wpa
   wpa-psk ascii 7 15342D5D567A72020E
!
dot11 ssid WNET3
   vlan 3
   authentication open
   authentication key-management wpa
   wpa-psk ascii 7 0220220A595656076A
!

Result wpa_supplicant:

Received 0 bytes of scan results (3 BSSes)
Scan results: 3
CTRL-EVENT-SCAN-RESULTS
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:23:5e:75:f7:c1 ssid='' wpa_ie_len=24 rsn_ie_len=0 caps=0x31
   skip - SSID mismatch
1: 00:23:5e:75:f7:c2 ssid='' wpa_ie_len=24 rsn_ie_len=0 caps=0x31
   skip - SSID mismatch
2: 00:23:5e:75:f7:c0 ssid='WNET1' wpa_ie_len=24 rsn_ie_len=0 caps=0x31
   selected based on WPA IE
   selected WPA AP 00:23:5e:75:f7:c0 ssid='WNET1' 
<----------------------------------------
Trying to associate with 00:23:5e:75:f7:c0 (SSID='WNET1' freq=2422 MHz)
Cancelling scan request



/etc/wpa_upplicant.conf:
# $Id$
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
#eapol_version=1
#ap_scan=1
fast_reauth=1
network={
  ssid="WNET1"
#  scan_ssid=1
  proto=RSN WPA
  key_mgmt=WPA-PSK
  pairwise=CCMP TKIP
  group=CCMP TKIP
  psk=8c23bb58a1a94b3b56b90d8f7422a29b18f495b517f33fc6728ff2a3ad4aae1f
}
#EOF

--

Best regards,

Borodin Oleg
Kaliningrad,Russia
ziggi_at_inbox.ru
Received on Sun Sep 06 2009 - 17:43:22 UTC

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