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The article misunderstands IPv6 addresses. The best way to put it is that IPv6 offers addresses for 2^64 networks. IPv6 numbers networks, and hosts attach to networks.

In v4, hosts come first and networks second. In v6, networks come first and hosts come second.

What do you mean by come first and come second ?

What's a first-class and a second-class concept in the architecture.

In IPv4, the IP address is central to the architecture, and the subnet is secondary. In v6, the /64 network is the core, and everything is arranged around that.

Hmm, I understand what you mean, but does it practically change anything? Should I write something differently in the article?

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