Hi
does anybody know how we can add more than one ip for NIC(in Redhat Linux 7.2)?
i usually do it by using this command
ifconfig eth0 add <ip addresss> netmask <..............> up


or ;

ip address add 192.168.20.1/24 dev eth0


or
adding it manually to file in /etc/sysconfig/network-scripts
but their is no ifcfg-eth0 !!!!!
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and it works cuz i can ping it from another machine


BUT when i reboot the machine all of the are gone.
I'm looking for way that these IPs can remain on the interface even after
reboot or shut down

is there anyone who can help me up?