lo        no wireless extensions.

eth4      no wireless extensions.

eth3      IEEE 802.11bg  ESSID:"WLAN_Baerbel"  Nickname:""
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:1C:4A:A7:28:15   
          Bit Rate=54 Mb/s   Tx-Power:32 dBm   
          Retry min limit:7   RTS thr:off   Fragment thr:off
          Power Managementmode:All packets received