commands.txt

# lspci | grep Wireless
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)

# lsmod | grep iwl3945
iwl3945                45764  0 
iwlcore                67014  1 iwl3945
mac80211              122866  2 iwl3945,iwlcore
cfg80211               86977  3 iwl3945,iwlcore,mac80211
led_class               1757  4 iwl3945,iwlcore,thinkpad_acpi,sdhci

# cat /etc/network/interfaces 
auto lo
iface lo inet loopback

# ip link set wlan0 up 
# iwconfig wlan0 essid Troutwine key KEY
# iwconfig wlan0 retry 10

# iwconfig wlan0
wlan0     IEEE 802.11abg  ESSID:"Troutwine"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: Not-Associated   
          Tx-Power=15 dBm   
          Retry limit:10   RTS thr:off   Fragment thr:off
          Encryption key:9CF6-8820-E1
          Power Management:off

# dhclient -v wlan0

Internet Systems Consortium DHCP Client 4.1.1-P1
Copyright 2004-2010 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/wlan0/00:1c:bf:d5:53:78
Sending on   LPF/wlan0/00:1c:bf:d5:53:78
Sending on   Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 17
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 2
No DHCPOFFERS received.
No working leases in persistent database - sleeping.