sudo lshw -C network
*-network DISABLED
description: Wireless interface
product: BCM94311MCG wlan mini-PCI
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:08:00.0
logical name: eth0
version: 01
serial: 00:14:a5:b0:8e:04
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=bcm43xx driverversion=2.6.22-14-generic latency=0 link=no module=bcm43xx multicast=yes wireless=IEEE 802.11b/g
sudo ifup eth0
SIOCSIFFLAGS: No such file or directory
SIOCSIFFLAGS: No such file or directory
SIOCSIFFLAGS: No such file or directory
Failed to bring up eth0.