wlan0     IEEE 802.11b  ESSID:"Wireless"  
          Mode:Managed  Frequency:2.422 GHz  Access Point: 00:11:D8:43:7B:CD   
          Bit Rate:11 Mb/s   Sensitivity=1/3  
          Retry min limit:8   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=0/70  Signal level=-4 dBm  Noise level=-4 dBm
          Rx invalid nwid:0  Rx invalid crypt:1  Rx invalid frag:0
          Tx excessive retries:244  Invalid misc:59314   Missed beacon:0