ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 90:FB:A6:92:A2:56
          inet addr:192.168.1.110  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::92fb:a6ff:fe92:a256/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8249571 errors:2 dropped:0 overruns:2 frame:0
          TX packets:15357766 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1131763825 (1.0 GiB)  TX bytes:22738570448 (21.1 GiB)
          Interrupt:27 Base address:0xe000

有时候有这样的需求，想要把网卡流量统计清零，但有不能重启服务器。以下是方法：
1、yum install ethtool -y
2、执行 ethtool -i eth0 ，获得模块名称：

[root@web ~]# ethtool -i eth0
driver: forcedeth
version: 0.64
firmware-version:
bus-info: 0000:00:07.0
3、ifconfig eth0 down
4、modprobe -r forcedeth
5、modprobe forcedeth
6、ifconfig eth0 up

ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 90:FB:A6:92:A2:56
          inet addr:192.168.1.110  Bcast:192.168.1.255  Mask:255.255.255.0
          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:1000
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:27 Base address:0xe000