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No, you misunderstand. You’re thinking of DHCP. The parent poster is talking about CGNAT, where hundreds or thousands of customers of an ISP may share the same public-facing IPv4 address. It’s impossible to self-host anything in this scenario, there no way around it and DDNS won’t help you.
No, you misunderstand. You’re thinking of DHCP. The parent poster is talking about CGNAT, where hundreds or thousands of customers of an ISP may share the same public-facing IPv4 address. It’s impossible to self-host anything in this scenario, there no way around it and DDNS won’t help you.