CentOS and Fedora (25 and earlier)
Step 1: Create the config file
First, make a copy of the source file so that you have a backup copy:
cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0.bkp
Step 2: Edit the config file
You can now modify the eth0 file in order to replace the IP:
nano /etc/sysconfig/network-scripts/ifcfg-eth0
Append the following to the end of the file
IPADDR2=First IP Address
NETMASK2=255.255.255.255
IPADDR3=Next IP Address
NETMASK3=255.255.255.255
IPADDR4=Next IP Address
NETMASK4=255.255.255.255
IPADDR5=Next IP Address
NETMASK5=255.255.255.255
Step 3: restart network service
service network restart
