给网卡添加第二个IP地址，也就是生成一个ifcfg-eth0:1来解决这个问题：
1)/etc/sysconfig/netwok-scripts/ifcfg-eth0          (172.16.1.68)
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
IPADDR=172.16.1.68
NETMASK=255.255.254.0
TYPE=Ethernet
USERCTL=no
IPV6INIT=no
PEERDNS=yes
BROADCAST=172.16.1.255
NETWORK=172.16.0.0
HWADDR=00:17:08:2d:93:66
GATEWAY=172.16.1.254

2)1)/etc/sysconfig/netwok-scripts/ifcfg-eth0:1             (192.168.0.103)
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
IPADDR=192.168.0.103
NETMASK=255.255.255.0
TYPE=Ethernet
USERCTL=no
IPV6INIT=no
PEERDNS=yes
BROADCAST=192.168.0.255
NETWORK=192.168.0.0
HWADDR=00:17:08:2d:93:66
GATEWAY=192.168.0.1
3)/etc/resolv.conf
; generated by /sbin/dhclient-script
search localdomain
nameserver 202.xx.xx.xx
nameserver 172.16.1.254
nameserver 192.168.0.1