Linux无线ESSID:off/any的错误


我用的Distribution是SUSE,昨天上网发现无线网络突然扫描不了,在命令行下输入iwconfig wlan0
得到的结果为:

wlan0    IEEE 802.11bgn  ESSID:off/any 
          Mode:Managed  Access Point: Not-Associated  Tx-Power=0 dBm 
          Retry  long limit:7  RTS thr:off  Fragment thr:off
          Encryption key:off
          Power Management:off
这个信息说明任何无线都无法被扫描到。

查了很多资料都不知道是什么原因。
输入命令/etc/init.d/network restart
得到的结果为:
Shutting down network interfaces:
    eth0      device: Realtek Semiconductor Co., Ltd. RTL8111/8168B
              No configuration found for eth0
              Nevertheless the interface will be shut down.          done
    wlan0    device: Atheros Communications Inc. AR9485 Wireless N  done
Shutting down service network  .  .  .  .  .  .  .  .  .            done
Hint: you may set mandatory devices in /etc/sysconfig/network/config
Setting up network interfaces:
    eth0      device: Realtek Semiconductor Co., Ltd. RTL8111/8168B
              No configuration found for eth0                        unused
    wlan0    device: Atheros Communications Inc. AR9485 Wireless N
    wlan0    warning: using NO encryption
    wlan0    Starting DHCP4+DHCP6 client. . . . . . . . 
    wlan0    DHCP4 continues in background
    wlan0    DHCP6 continues in background                          waiting
Setting up service network  .  .  .  .  .  .  .  .  .  .            done
SuSEfirewall2: Setting up rules from /etc/sysconfig/SuSEfirewall2 ...
SuSEfirewall2: using default zone 'ext' for interface eth0
SuSEfirewall2: batch committing...
SuSEfirewall2: Firewall rules successfully set

注意,上面的信息中有一个异常:wlan0    DHCP6 continues in background                          waiting
进到图形界面的“网络设置”中的“全局选项”,如下图所示:

发现图中的“启用IPv6”选项被勾起来了。把该选项前面的勾去掉,无线网络恢复可以为正常扫描。

问题解决!

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