what's this IPv6??IPv6 — short for Internet Protocol version 6 — is basically a system which will make sure that we can keep letting the Internet grow without worrying that something will break soon.
You see, every machine that's connected to the Internet (including smartphones and tablets) has an IP address — a number like 192.168.1.1 — assigned to it. Each of those numbers consists of four sets of digits — ranging from 0 to 255 — separated by periods. If you crunch the math, that means there are about 4 billion possible IP addresses. And it turns out we've already managed to use all of those 4 billion possible IP addresses. That means we need a way to create new ones. And that's what IPv6 is — a way to create more numbers to assign to our Internet-connected machines.
