alt Hacker NewsIsn't CGnat due to IPv6 use on the mobiles? You could quit and say that's an IPv6 problem that didn't get solved in the IPv6 engineering
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nulbyte • 01/02/2026
Why would CGNAT be deployed as a response to IPv6 on mobile? I don't understand the logic there. CGNAT is deployed due to a shortage of publicly routable IPv4 addresses. IPv6 was introduced due to having much larger publicly routable space.
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IPv6 is used on mobile networks since there aren't enough IPv4 addresses. Some of these mobile networks are so big there aren't even enough private IPv4 addresses for their CG-NAT private side to fit, leaving the only clean solution being NAT64/DNS64.