1.停止网络：/etc/init.d/network stop

 2.修改网卡的配置文件：vim /etc/sysconfig/network-scripts/ifcfg-eth0

  DEVICE=eth0

  BOOTPROTO=static

  HWADDR=50:e5:49:ba:70:f2

  ONBOOT=yes

  NETMASK=255.255.255.0

  IPADDR=192.168.1.154

  GATEWAY=192.168.1.1

  TYPE=Ethernet

  BRIDGE=br0

 3.复制eth0，重命名为br0:cp-r /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-br0

 4.修改/etc/sysconfig/network-scripts/ifcfg-br0

   DEVICE="br0"

   BOOTPROTO=static

   HWADDR=50:e5:49:ba:70:f2

   ONBOOT=yes

   NETMASK=255.255.255.0

   IPADDR=192.168.1.154

   GATEWAY=192.168.1.1

   TYPE="Bridge"

 5.启动网络：/etc/init.d/network start