Failed wireless connection

[Antonio Paiva <arpaiva@cnel.ufl.edu>]

Hi,

I'm trying to use wireless access with a Asus WL-100 pcmcia wireless 
card. The card is detected and works in the system (Debian Etch beta2).
When I insert the card the hostap driver is activated. I then changed 
the driver default wireless parameters with:

iwconfig wlan0 mode managed essid "ANY" rate auto

and running iwconfig again shown the card connect to an AP in the range.
My problems begin when I try to get a IP address, because the dhclient 
keeps reporting network down everytime it send a package. After that the 
interface desapears from ifconfig, and iwconfig reports the interface 
has no wireless extensions.

Any ideas?

Thank you all,
Antonio