Hello,
Please consider this guide. If Linux wants to be used as a gateway for several different IP address ranges, then is it possible to set multiple IP addresses on Linux NICs?

Thank you.

Actually, it is possible to set multiple IP addresses on Linux NICs regardless of your reason. You do not have to want it to act as a gateway, bridge, or router for that to be an option.
See any of the hundreds like https://ostechnix.com/how-to-assign-...card-in-linux/

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From the quoted guide in post #1
Why ask for confirmation of something that has already been read?

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You'd have to have a very old or odd nic that can't support multiple ip addresses. They still exist that can't.

That did not age well. Gas prices are WAY down and food prices at restaurants never went up that much.
Oh, and Gates GIVES AWAY more money that it would cost to by many small gas station and small steak house chains!

Not sure where you live, but where it used to be around $20 for both of us, it is now easily $30 and we are not talking about fancy restaurants... Fast food is now over $10 'each'.

I've never found a need for multiple IP addresses. Just one per NIC card to keep networks separate. For example, all my machines have at least two NICs. One for the Internet, and then one for the internal home network. And then bind certain services to just the home network NIC (like NFS, SFTP, SAMBA, etc.) .

Sorry to hear that. As I recall Montana and North Dakota have never been the cheapest places to eat out anyway, but I think Gates could afford the $30 without blinking. I started as a NEtwork Admin, Database programmer, and Unix System Administrator in '85 and needed to add more addresses than there were Ethernet interfaces quite often over the years. I was shocked in about 2006 when I needed that on a Linux server and discovered it was EASY! Luckily my next job had management I could talk into purchasing servers with 4 or more Ethernet ports each, and life got easy. Just because one of us has not used the option does not mean others have not found it critical.

Hello,
Thank you so much for all replies.