Linux wireless ESSID: off/any error

Linux wireless ESSID: off/any error I used Distribution is SUSE. I found that the wireless network could not be scanned yesterday. Enter iwconfig wlan0 in the command line to get the result: www.2cto.com 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 this message indicates that no wireless device can be scanned. I found a lot of information and did not know why. Enter the command/etc/init. d/network restart: www.2cto.com Shutting down network interfaces: eth0 device: Realtek semiconduco ., ltd. RTL8111/8168B No configuration found for eth0 Nevertheless the interface will be shut down. done wlan0 device: Atheros Communications Inc. ar9425wireless N doneshuting down service network ......... doneHint: you may set mandatory devices in/etc/sysconfig/network/configSetting up network interfaces: eth0 device: Realtek semiconduco ., ltd. RTL8111/8168B No configuration found for eth0 unused wlan0 device: Atheros Communications Inc. ar9425wireless N wlan0 warning: using NO encryption wlan0 Starting DHCP4 + DHCP6 client ........ wlan0 DHCP4 continues in background wlan0 DHCP6 continues in background waitingSetting up service network .......... doneSuSEfirewall2: Setting up rules from/etc/sysconfig/SuSEfirewall2... suSEfirewall2: using default zone 'ext 'for interface eth0SuSEfirewall2: batch committing... suSEfirewall2: Firewall rules successfully set note that the above information has an exception: wlan0 DHCP6 continues in background waiting enters the "Global Options" in "Network Settings" of the graphic interface, as shown in:
The "enable IPv6" option in the figure is checked. Remove the check box before this option, and the wireless network can be restored to normal scanning. Solve the problem!