Solution:
1. Get the real mac of the new network card
#ip addr
2. Copy eth0 to eth1 and modify the configuration file
#cd /etc/sysconfig/network-scripts #cp ifcfg-eth0 ifcfg-eth1 #vim ifcfg-eth1
3. Modify the following content:
HWADD 通过ip addr获取 UUID 若没有查到UUID，可以注释掉 NAME 改为当前的网卡名eth1 DEVICE 改为当前的网卡名eth1 IPADDR GATEWAY
Save and exit.
4. Restart the network card
#systemctl restart network
Recommended related tutorials: centos tutorial
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