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：
wlan0IEEE 802.11bgnESSID:off/any
Mode:ManagedAccess Point: Not-AssociatedTx-Power=0 dBm
Retrylong limit:7RTS thr:offFragment 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:
eth0device: Realtek Semiconductor Co., Ltd. RTL8111/8168B
No configuration found for eth0
Nevertheless the interface will be shut down.done
wlan0device: Atheros Communications Inc. AR9485 Wireless Ndone
Shutting down service network.........done
Hint: you may set mandatory devices in /etc/sysconfig/network/config
Setting up network interfaces:
eth0device: Realtek Semiconductor Co., Ltd. RTL8111/8168B
No configuration found for eth0unused
wlan0device: Atheros Communications Inc. AR9485 Wireless N
wlan0warning: using NO encryption
wlan0Starting DHCP4 DHCP6 client. . . . . . . .
wlan0DHCP4 continues in background
wlan0DHCP6 continues in backgroundwaiting
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：wlan0DHCP6 continues in backgroundwaiting
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 。
【Linux无线ESSID:off/any错误怎么办】问题解决！
