'when do we use secondary ip address in linux os?
I get to know why we use secondary IP or VIP on routers or switchs. But why we need to set secondary IP in linux OS. I have seen 'how to' but haven't seen 'why'. We can actually set 2 IP on 1 MAC Address as we use nmcli command (I am just a newbie so possibely it's wrong). I heard one MAC address can only have one IP address(I guess...?). so plz tell me the purpose of secondary IP.
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