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现在已装好驱动，并检测到无线信号，但不知道下一步如何配置才能上网？

下面是机器的清况：

1.执行 "iwconfig" ，结果如下:

eth1 IEEE 802.11b/g ESSID:"default" Nickname:"Broadcom 4311"
Mode:Managed Frequency=2.437 GHz Access Point: 00:13:46:36:95:45
Bit Rate=24 Mb/s Tx-Power=18 dBm
RTS thr:off Fragment thr:off
Link Quality=80/100 Signal level=-50 dBm Noise level=-69 dBm
Rx invalid nwid:0 Rx invalid crypt:5636 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

2.执行 " iwlist eth1 scanning" ，结果如下:

eth1 Scan completed :
Cell 01 - Address: 00:13:46:36:95:45
ESSID:"default"
Protocol:IEEE 802.11bg
Mode:Master
Channel:6
Frequency:2.437 GHz (Channel 6)
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Quality=97/100 Signal level=-43 dBm Noise level=-71 dBm
Extra: Last beacon: 44ms ago

Cell 02 - Address: 00:13:46:0C:CC:D5
ESSID:"kemao"
Protocol:IEEE 802.11bg
Mode:Master
Channel:6
Frequency:2.437 GHz (Channel 6)
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
11 Mb/s; 12 Mb/s; 18 Mb/s; 22 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Quality=78/100 Signal level=-77 dBm Noise level=-71 dBm
Extra: Last beacon: 60ms ago


能工作但是不能通过验证!
sudo dhclient eth1
DHCPDISCOVER on eht1 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on eht1 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on eht1 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on eht1 to 255.255.255.255 port 67 interval 16
DHCPDISCOVER on eht1 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on eht1 to 255.255.255.255 port 67 interval 11
No DHCPOFFERS received.
No working leases in persistent database - sleeping.