如何解决“通过本地选择取消身份验证”？

Question

我使用Buildroot构建了一个嵌入式 Linux ，但在与 AP 保持连接时遇到了一些麻烦。无法多次获取 IP 地址。

我使用 wpa_supplicant 使用 WPA2-PSK 连接到我的 AP。它可以在 AP 模式下与其他 AP 一起使用，例如我的智能手机。

当我使用时，iwconfig wlan0我看到我与我的 AP 相关联

wlan0     IEEE 802.11bgn  ESSID:"ZyXEL_B3B5"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 90:EF:68:D3:B3:B5   
          Bit Rate=58.5 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=53/70  Signal level=-57 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:1   Missed beacon:0

但我无法获得 IP 地址 ifup wlan0

udhcpc (v1.22.1) started
Sending discover...
Sending discover...
Sending discover...
No lease, failing

我应该说我只能获得一次 IP 地址。如果我重新启动，这将不再可能。

我设法安装dhclient而不是使用 Busybox 的默认 DHCP 客户端，但没有任何反应（我无限期地被阻止）

dhclient wlan0

根据我的内核消息，我似乎没有持续关联

[  355.459738] wlan0: authenticate with 90:ef:68:d3:b3:b5 (try 1)
[  355.461366] wlan0: authenticated
[  355.461416] wlan0: associate with 90:ef:68:d3:b3:b5 (try 1)
[  355.469353] wlan0: RX AssocResp from 90:ef:68:d3:b3:b5 (capab=0x431 status=0 aid=1)
[  355.469364] wlan0: associated
[  365.547863] wlan0: deauthenticating from 90:ef:68:d3:b3:b5 by local choice (reason=3)
[  365.672765] cfg80211: Calling CRDA to update world regulatory domain
[  367.169736] wlan0: authenticate with 90:ef:68:d3:b3:b5 (try 1)
[  367.171421] wlan0: authenticated
[  367.194859] wlan0: associate with 90:ef:68:d3:b3:b5 (try 1)
[  367.198561] wlan0: RX AssocResp from 90:ef:68:d3:b3:b5 (capab=0x431 status=0 aid=1)
[  367.198584] wlan0: associated
[  377.277864] wlan0: deauthenticating from 90:ef:68:d3:b3:b5 by local choice (reason=3)
[  377.412822] cfg80211: Calling CRDA to update world regulatory domain
[  378.899738] wlan0: authenticate with 90:ef:68:d3:b3:b5 (try 1)
[  378.901668] wlan0: authenticated
[  378.924732] wlan0: associate with 90:ef:68:d3:b3:b5 (try 1)
[  378.928437] wlan0: RX AssocResp from 90:ef:68:d3:b3:b5 (capab=0x431 status=0 aid=1)
[  378.928461] wlan0: associated
[  389.008120] wlan0: deauthenticating from 90:ef:68:d3:b3:b5 by local choice (reason=3)
[  389.182888] cfg80211: Calling CRDA to update world regulatory domain
[  390.689735] wlan0: authenticate with 90:ef:68:d3:b3:b5 (try 1)
[  390.691415] wlan0: authenticated
[  390.714734] wlan0: associate with 90:ef:68:d3:b3:b5 (try 1)
[  390.720847] wlan0: RX AssocResp from 90:ef:68:d3:b3:b5 (capab=0x431 status=0 aid=1)
[  390.720870] wlan0: associated
[  400.811246] wlan0: deauthenticating from 90:ef:68:d3:b3:b5 by local choice (reason=3)
...

我的 AP 的日志

338     Nov 16 15:50:53 udhcpd[2404]: Received DISCOVER
339     Nov 16 15:50:53 udhcpd[2404]: unicasting packet to client yiaddr
340     Nov 16 15:50:56 udhcpd[2404]: Received DISCOVER
341     Nov 16 15:50:56 udhcpd[2404]: unicasting packet to client yiaddr
342     Nov 16 15:50:59 udhcpd[2404]: Received DISCOVER
343     Nov 16 15:50:59 udhcpd[2404]: unicasting packet to client yiaddr

运行时的日志（仅一次）

325     Nov 16 15:48:37 udhcpd[2404]: Received DISCOVER
326     Nov 16 15:48:37 udhcpd[2404]: unicasting packet to client yiaddr
327     Nov 16 15:48:37 udhcpd[2404]: Received REQUEST
328     Nov 16 15:48:37 udhcpd[2404]: lease = 11854360
329     Nov 16 15:48:37 udhcpd[2404]: requested = b2a8eb7f
330     Nov 16 15:48:37 udhcpd[2404]: server_id = c0a80101
331     Nov 16 15:48:37 udhcpd[2404]: unicasting packet to client yiaddr

如何解决？

Answer 1

我将 AP 中的“自动通道”选项更改为固定通道，将“通道宽度”选项更改为 20 MHz，这解决了我的问题。