cannot obtain an IP address via dhcp on Kubuntu 8.04

[otakuj462]

Binary package hint: pump

I am on a wifi-encrypted wireless network. The access point is a Bell Canada 2701HG-G Gateway (according to the device; I don't have physical access to it). I'm using a Dell Wireless 1370 Mini-PC card with a recent NDIS wrapper. I'm able to configure the network both manually and using NetworkManager, and successfully associate. Unfortunately, both pump and dhclient fail to obtain an IP address via dhcp. Connecting to the network and obtaining an IP address works fine for me in WinXP.

Here is an interesting snippet from /var/log/syslog logged by pump:

Sep 1 23:03:25 jacob-laptop avahi-daemon[6463]: Registering new address record for fe80::216:ceff:fe46:e6ab on eth1.*.
Sep 1 23:03:31 jacob-laptop pumpd[9893]: PUMP: sending discover
Sep 1 23:03:34 jacob-laptop kernel: [ 15.656688] eth1: no IPv6 routers present
Sep 1 23:03:42 jacob-laptop dhclient: DHCPREQUEST of <null address> on eth1 to 192.168.1.254 port 67
Sep 1 23:03:42 jacob-laptop dhclient: send_packet: Network is unreachable
Sep 1 23:03:42 jacob-laptop dhclient: send_packet: please consult README file regarding broadcast address.
Sep 1 23:03:51 jacob-laptop pumpd[9893]: got dhcp offer
Sep 1 23:03:51 jacob-laptop pumpd[9893]: PUMP: sending second discover
Sep 1 23:04:00 jacob-laptop dhclient: DHCPREQUEST of <null address> on eth1 to 192.168.1.254 port 67
Sep 1 23:04:00 jacob-laptop dhclient: send_packet: Network is unreachable
Sep 1 23:04:00 jacob-laptop dhclient: send_packet: please consult README file regarding broadcast address.
Sep 1 23:04:17 jacob-laptop pumpd[9893]: reject: xid: 0xb9cc5bf2 <--> 0xb9cc5bf1
Sep 1 23:04:20 jacob-laptop avahi-daemon[6463]: Withdrawing address record for fe80::216:ceff:fe46:e6ab on eth1.
Sep 1 23:04:21 jacob-laptop dhclient: DHCPREQUEST of <null address> on eth1 to 192.168.1.254 port 67
Sep 1 23:04:21 jacob-laptop dhclient: send_packet: Network is unreachable
Sep 1 23:04:21 jacob-laptop dhclient: send_packet: please consult README file regarding broadcast address.
Sep 1 23:04:25 jacob-laptop avahi-daemon[6463]: Registering new address record for fe80::216:ceff:fe46:e6ab on eth1.*.
Sep 1 23:04:34 jacob-laptop dhclient: DHCPREQUEST of <null address> on eth1 to 192.168.1.254 port 67
Sep 1 23:04:34 jacob-laptop dhclient: send_packet: Network is unreachable
Sep 1 23:04:34 jacob-laptop dhclient: send_packet: please consult README file regarding broadcast address.
Sep 1 23:04:34 jacob-laptop kernel: [ 22.021990] eth1: no IPv6 routers present
Sep 1 23:04:54 jacob-laptop dhclient: DHCPREQUEST of <null address> on eth1 to 192.168.1.254 port 67
Sep 1 23:04:54 jacob-laptop dhclient: send_packet: Network is unreachable