this post was submitted on 10 Oct 2023
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Asklemmy
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What if somebody at, let’s say, a Starbucks gets banned, would every costumer be at risk?
Reddit should be able to tell by the number of different accounts that connect through an IP like that that it's not a home wifi network and treat it accordingly, the question is do they actually do that (probably cuz otherwise you'd never be able to connect through a VPN lol)
But... CG-NAT. Most people don't have their own IP, so how do you deal with this?
Either they’ll see it like some kind of public WiFi, or there’ll be collateral damage. But keep in mind that CG-NAT usually only applies to IPv4, so if your ISP and home network support IPv6, Reddit won’t have said problem and see you IPv6 address.
I can’t say how they do it now, but it used to happen all of the time. A service would ban an IP that was shared, or even a range of IPs if the traffic was disruptive enough. Then the owner would have to contact the service to have their ban removed.
I’ve run into IP ban messages from both hotel WiFi and from VPN addresses.
They most likely don't rely on a single metric to determine if someone is evading a ban. False-positives can happen though.