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by remoteorbust 2865 days ago
Sure. If you are a CDN right now you can host multiple customers on one ip. If you are using TLS there are 2 ways to do this:

1. Have a big SAN cert with lots of names.

2. Use SNI to select the correct certificate for that client and route to the correct customer config (and therefore correct origin)

If SNI didn't exist we'd be back to the bad old days of every TLS site requiring a dedicated IP. As ipv4 exhaustion has gotten worse this has gotten more expensive. However if we're using ipv6 then hosting N listeners for N ip addresses, each with their own dedicated cert, is much more scalable.