lo        no wireless extensions.

wlan1     IEEE 802.11bg  ESSID:"NiewidocznyUniwersytet"  
          Mode:Managed  Frequency:2.457 GHz  Access Point: 00:1C:F0:E4:B7:51   
          Bit Rate=54 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=29/70  Signal level=-81 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:7  Invalid misc:2715   Missed beacon:0