WPA and DHCP Problems

[Brad De Vries]

Hey all, I was curious if anyone has had the following problem and was
successful at fixing it.

Hardware:
Wireless NIC - Proxim Silver (ORiNOCO 11b/g PC Card) using the Atheros chipset
D-Link router - DI-624 wired/wireless router with WPA-PSK (using TKIP) enabled
IBM T20 laptop - dual boot Kubuntu 5.10 (Breezy) and Win2000
=================================
Setup:
The wireless NIC appears to load correctly creating ath0 interface.
The wpa_supplicant appears to load correctly with WPA enable and the
passphrase set correctly with wpa_passphrase.
=================================
Problem:
I don't get an IP address from my router after wpa_supplicant has authenticated.
=================================
Commands and output:
# wpa_cli
<version and copyright stuff snipped>

Selected interface 'ath0'

Interactive mode

> status
bssid-00:11:95:68:3e:c4
ssid=devfam
pairwise_cipher=TKIP
group_cipher=TKIP
key_mgmt=WPA-PSK
wpa_state=COMPLETED
Supplicant PAE state=AUTHENTICATED
suppPortStatus=Authorized
EAP state=SUCCESS

----------------------------------------

# dhclient ath0
<version and copyright stuff snipped>

sit0: unknown hardware address type 776
sit0: unknown hardware address type 776
Listening on LPF/ath0/00:20:a6:51:77:f0
Sending on   LPF/ath0/00:20:a6:51:77:f0
Sending on   Socket/fallback
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 19
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 8
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

----------------------------------------

My D-Link DI-624 Log:

Time                    Message                   Note
Oct/06/2005 11:03:05    Authentication Success   00-20-a6-51-77-f0
Oct/06/2005 11:03:04    Authenticating......     00-20-a6-51-77-f0

=================================

Any help would be greatly appreciated.  BTW, this setup works fine if
I boot into Win2000 and it used to work fine using Kubuntu 5.04
(Hoary).  Nothing has changed except upgrading Kubuntu.

TIA,
Brad.