hostap + WEP problems

Hi,

I've been running a homemade access point (Soekris box, 4.7-RELEASE, 
Zcomax card in hostap mode) for a few months now without problems. The 
firmware of the hostap card is "wi0: Intersil Firmware: Primary 1.00.07, 
Station 1.03.06".

I have trouble connecting to that hostap box with a Toshiba e740 
PocketPC with its built-in wireless iff WEP is enabled (works fine 
without WEP.)

I'm not sure what wireless card the Toshiba has, but I'm guessing it's 
also PRISM-based, since the firmware version in the "info" screen looks 
familiar:

	Firmware:	1.03.06
	Driver:		1.07.29
	Utility:	1.0.14

According to wicontrol, the Toshiba successfully associates to the 
hostap box (its MAC address is 00:01:24:81:40:ad), and the Toshiba 
itself also starts displaying signal strength and AP info:

router# wicontrol -l
2 stations:
00:01:24:81:40:ad  asid=01b0, flags=3<ASSOC,AUTH>, caps=11<ESS,PRIVACY>, 
rates=f<1M,2M,5.5M,11M>, sig=79/30
00:40:96:40:5b:c9  asid=0110, flags=3<ASSOC,AUTH>, caps=11<ESS,PRIVACY>, 
rates=f<1M,2M,5.5M,11M>, sig=82/28

However, it fails to get an IP address via DHCP. Here's what tcpdump on 
the access point shows when I turn on the Toshiba:

router# tcpdump -s 65535 -X -e -vvv -i wi0 ether host 0:1:24:81:40:ad
tcpdump: WARNING: wi0: no IPv4 address assigned
tcpdump: listening on wi0
10:40:26.731128 0:1:24:81:40:ad 0:60:b3:72:b7:fb 0000 14: [|llc]
10:40:31.752959 0:1:24:81:40:ad 0:60:b3:72:b7:fb 0000 14: [|llc]
10:40:32.914994 0:1:24:81:40:ad 0:60:b3:72:b7:fb 0000 14: [|llc]
10:40:35.247646 0:1:24:81:40:ad 0:60:b3:72:b7:fb 0000 14: [|llc]
10:40:35.902229 0:1:24:81:40:ad 0:60:b3:72:b7:fb 0000 14: [|llc]
10:40:37.214932 0:1:24:81:40:ad 0:60:b3:72:b7:fb 0000 14: [|llc]
10:40:37.429434 0:1:24:81:40:ad 0:60:b3:72:b7:fb 0000 14: [|llc]
10:40:38.433680 0:1:24:81:40:ad 0:60:b3:72:b7:fb 0000 14: [|llc]

Any ideas?

Thanks,
Lars
-- 
Lars Eggert <[email protected]>           USC Information Sciences Institute