Multiple IP addresses on one interface?

Question

linux

Please give examples when you may need several IP addresses on one interface?

Answer 1

And what to bring... When there is a heap of subnets in one network. For example, they dragged a new piece of iron, but its default subnet is not the same. Or in a small office it’s convenient not to spread all sorts of switches and access points across the vlan, but simply assign them a separate subnet. Yes, a lot of everything where it may be needed, even for load balancing!
Are you not confused by the number of IP addresses on one interface in ipv6?

Answer 2

Sites with SSL on different addresses.
Addresses from different subnets on the router.
NS-ki (only stupid to keep them on the same server).

Answer 3

Like when you want to raise your NS.
This, of course, has nothing to do with one interface - it can be on several. But your question is very strange.

Answer 4

hosting
transfer of services from another computer
address in different subnets - for example, in one vlan there is both a gray network and a real one. Some systems are visible only in gray addresses, some only in real ones, and some in both..

Answer 5

you need to process a bunch of outgoing connections, and for 1 IP the number of ports is slightly more than 65 thousand,
while there is no way to use one or more interfaces

Answer 6

Router, several providers can be set up in 1 vlan interface.
DMZ zones. 1 interface comes from the provider, and then you resolve the mail server, website, services.