cd /etc/sysconfig/network-scripts/
cp ifcfg-eth0 ifcfg-eth0:1
vim ifcfg-eth0:1
    DEVICE=eth0:1                 # 修改网卡名称
    HWADDR=29:61:16:5B:29:7C
    TYPE=Ethernet
    UUID=bf14538c-a6cf-4fd3-b459-e4db69437c2e
    ONBOOT=yes
    NM_CONTROLLED=yes
    BOOTPROTO=static
    IPADDR=192.168.1.203
    NETMASK=255.255.255.192
    GATEWAY=xxx.xxx.xx.xxx
    DNS1=8.8.8.8

ifup eth0:1

ip addr del 192.168.0.1 dev eth0 # 删除网卡的第二个IP地址