A party sounds fun!

Basically, most of the Internet right now uses IPv4 addresses -- your home Internet connection, this website, everything. There is a limited # of these addresses, in fact, in most regions of the world all the IPv4 addresses available have already been assigned to providers. Soon there will be no more addresses available, though I admit that's a bit of an alarmist thing to say -- a lot of these addresses are simply inactive. IPv6 is a new addressing scheme that also comes with some new features, but most importantly the # of addresses available is virtually unlimited.

I know some HamIsland nerds might want to add their own technical details to my description, but this is a high level overview.

https://en.wikipedia.org/wiki/IPv6