lo        no wireless extensions.

eth0      no wireless extensions.

vboxnet0  no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"castle"  
          Mode:Ad-Hoc  Frequency:2.457 GHz  Cell: 66:93:0F:B6:00:87   
          Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off