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Because most home networks are IPv4 via NAT



Not to mention most business networks, the vast majority of industrial control networks. So basically damn near anywhere you would want to deploy a networked embedded system. Many systems have IPv6 support but you will still need to talk to IPv4 devices, and you need an IPv4 stack to do that.


Most home networks are also a single collision domain where an IPv6 network can establish itself autonomously, without the kludges of a v4.

People, just let it rest.


Ah ok, so we'll never get over IPv4 if we still take potshots at anything that doesn't support it.

Oh by the way, I'm sure we all agree that using IPv4 for IoT, especially new deployments, is a particularly bad idea.




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