Here's the result after running this script (the directory has the correct permissions in /lib/firmware) : root@mokona:~# rmmod bcm43xx root@mokona:~# modprobe b43 root@mokona:~# dmesg [cut] [360324.734065] ACPI: PCI Interrupt 0000:02:09.0[A] -> Link [APC4] -> GSI 19 (level, low) -> IRQ 19 [360324.754205] ssb: SPROM revision 1 detected. [360324.771029] ssb: Sonics Silicon Backplane found on PCI device 0000:02:09.0 [360324.783051] b43-phy3: Broadcom 4306 WLAN found [360324.858103] phy3: Selected rate control algorithm 'simple' [360324.983406] udev: renamed network interface wlan0 to eth0 [360325.047452] input: b43-phy3 as /devices/virtual/input/input11 [360326.687343] Registered led device: b43-phy3:tx [360326.688405] Registered led device: b43-phy3:rx [360326.689284] Registered led device: b43-phy3:radio [360327.675103] eth0: Initial auth_alg=0 [360327.675114] eth0: authenticate with AP 7a:7c:62:6a:c2:b4 root@mokona:~# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0f:66:f2:8e:4a UP BROADCAST MULTICAST MTU:1500 Metric:1 Packets reçus:0 erreurs:0 :0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B) lo Link encap:Boucle locale inet adr:127.0.0.1 Masque:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 Packets reçus:13596 erreurs:0 :0 overruns:0 frame:0 TX packets:13596 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:0 Octets reçus:6626713 (6.3 MB) Octets transmis:6626713 (6.3 MB) wmaster0 Link encap:UNSPEC HWaddr 00-0F-66-F2-8E-4A-00-00-00-00-00-00-00-00-00-00 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:0 erreurs:0 :0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B) root@mokona:~# iwconfig lo no wireless extensions. wmaster0 no wireless extensions. eth0 IEEE 802.11g ESSID:"freebox" Mode:Managed Frequency:2.447 GHz Access Point: 7A:7C:62:6A:C2:B4 Tx-Power=27 dBm Retry min limit:7 RTS thr:off Fragment thr=2346 B Encryption key:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 root@mokona:~# /etc/init.d/networking restart * Reconfiguring network interfaces...There is already a pid file /var/run/dhclient.eth0.pid with pid 16242 killed old client process, removed PID file Internet Systems Consortium DHCP Client V3.0.6 Copyright 2004-2007 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ wmaster0: unknown hardware address type 801 wmaster0: unknown hardware address type 801 Listening on LPF/eth0/00:0f:66:f2:8e:4a Sending on LPF/eth0/00:0f:66:f2:8e:4a Sending on Socket/fallback DHCPRELEASE on eth0 to 192.168.15.254 port 67 send_packet: Network is unreachable send_packet: please consult README file regarding broadcast address. There is already a pid file /var/run/dhclient.eth0.pid with pid 134519072 Internet Systems Consortium DHCP Client V3.0.6 Copyright 2004-2007 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ wmaster0: unknown hardware address type 801 wmaster0: unknown hardware address type 801 Listening on LPF/eth0/00:0f:66:f2:8e:4a Sending on LPF/eth0/00:0f:66:f2:8e:4a Sending on Socket/fallback DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5 No DHCPOFFERS received. No working leases in persistent database - sleeping. and dmesg is filled with : [360519.842143] eth0: Initial auth_alg=0 [360519.842154] eth0: authenticate with AP 7a:7c:62:6a:c2:b4 [360520.041328] eth0: authenticate with AP 7a:7c:62:6a:c2:b4 [360520.241352] eth0: authenticate with AP 7a:7c:62:6a:c2:b4 [360520.441368] eth0: authentication with AP 7a:7c:62:6a:c2:b4 timed out root@mokona:~# lshw -C network *-network description: Network controller product: BCM4306 802.11b/g Wireless LAN Controller vendor: Broadcom Corporation physical id: 9 bus info: pci@0000:02:09.0 version: 03 width: 32 bits clock: 33MHz capabilities: bus_master configuration: driver=b43-pci-bridge latency=32 module=ssb *-network description: Wireless interface physical id: 1 logical name: eth0 serial: 00:0f:66:f2:8e:4a capabilities: ethernet physical wireless configuration: broadcast=yes multicast=yes wireless=IEEE 802.11g The problem is the same as when I opened this bug report.