eth1      IEEE 802.11b/g  ESSID:"liang"  Nickname:"zd1211"
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:0C:41:3C:AF:A4   
          Bit Rate=11 Mb/s   
          Link Quality=70/100  Signal level=22/100  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0