ZyDAS ZD1211 802.11b/g USB WLANを使うには

          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1804 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1804 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2045597 (1.9 MiB)  TX bytes:2045597 (1.9 MiB)
wlan0     Link encap:Ethernet  HWaddr 00:13:D4:94:5E:E1
          inet addr:192.168.1.20  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::213:d4ff:fe94:5ee1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:86 errors:0 dropped:0 overruns:0 frame:0
          TX packets:101 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:81770 (79.8 KiB)  TX bytes:17988 (17.5 KiB)
          Mode:Managed  Frequency=2.437 GHz  Access Point: 00:A0:B0:67:ED:6E
          Bit Rate:54 Mb/s
          Retry:off   RTS thr=2432 B   Fragment thr:off
          Encryption key:****-****-****-****-****-****-**   Security mode:open
          Power Management:off
          Link Quality=96/100  Signal level=44/100  Noise level=0/100
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

sit0      no wireless extensions.