用检查设备的命令有以下结果：
*-network DISABLED
description: Ethernet interface
product: RTL-8139/8139C/8139C+
vendor: Realtek Semiconductor Co., Ltd.
physical id: 5
bus info: pci@0000:09:05.0
logical name: eth0
version: 10
serial: 00:13:77:38:58:6d
size: 100MB/s
capacity: 100MB/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-
fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes
driver=8139too driverversion=0.9.28 duplex=full latency=32 link=yes maxlatency=64 mingnt=32
module=8139too multicast=yes port=MII speed=100MB/s
输入ifconfig -a的结果是：
horace@horace-227:~$ ifconfig -a
ath0 Link encap:Ethernet HWaddr 00:1b:9e:11:12:95
inet6
addr: fe80::21b:9eff:fe11:1295/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500
Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0
dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
eth0 Link encap:Ethernet HWaddr 00:13:77:38:58:6d
BROADCAST MULTICAST
MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0
errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX
bytes:0 (0.0 B)
Interrupt:22 Base address:0x4000
lo Link encap:Local Loopback
inet
addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING
MTU:16436 Metric:1
RX packets:82 errors:0 dropped:0 overruns:0 frame:0
TX packets:82
errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4092 (4.0 KB)
TX bytes:4092 (4.0 KB)
pan0 Link encap:Ethernet HWaddr 46:c2:71
5c:71 BROADCAST
MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0
(0.0 B) TX bytes:0 (0.0 B)
wifi0 Link encap:UNSPEC HWaddr 00-1B-9E-11-12-95-00-00-00-00-00-
00-00-00-00-00
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX
packets:72 errors:0 dropped:0 overruns:0 frame:828
TX packets:171 errors:0 dropped:0 overruns:0
carrier:0
collisions:0 txqueuelen:199
RX bytes:3548 (3.5 KB) TX bytes:7866 (7.8 KB)
Interrupt:16