маршрутизатор dlink dir300. wpa2, aes, dhcp
карточка на ноуте realtek rtl8187se
в венде подключается без проблем. в убунте сеть находит, спрашивает пароль, но не выдаёт ip по dhcp
пробовал через nm, wicd и вручную прописывал настройки в /etc/network/interfaces - результат одинаковый
ubuntu 10.04 x64 livecd

gedit /etc/network/interfaces

iface wlan0 inet dhcp
wpa-driver wext
wpa-ssid eersadnet
wpa-ap-scan 1
wpa-proto WPA
wpa-pairwise CCMP
wpa-key-mgmt CCMP
wpa-psk top_secret
auto wlan0

/etc/init.d/networking restart

* Reconfiguring network interfaces... Internet Systems Consortium
DHCP Client V3.1.3
Copyright 2004-2009 Internet Systems Consortium.
All rights reserved.
For info, please visit
https://www.isc.org/software/dhcp/
Listening on LPF/wlan0/b4:82:fe:14:1f:72
Sending on LPF/wlan0/b4:82:fe:14:1f:72
Sending on Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 20
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
grep:
/etc/resolv.conf: No such file or directory
[ OK ]

в чём проблема может быть?