localhost portage # iwconfig
lo        no wireless extensions.

eth1      IEEE 802.11b/g  ESSID:off/any  Nickname:"Broadcom 4306"
          Mode:Managed  Frequency=2.442 GHz  Access Point: Invalid   
          RTS thr:off   Fragment thr:off
          Encryption key:off
          Link Quality=0/100  Signal level=0 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

eth0      no wireless extensions.

localhost portage # iwlist eth1 scan
eth1      Interface doesn't support scanning : No such device