Oh no, the devices in my WAN aren't directly exposed to the internet! What ever will I do‽

There's lots of reasons to push for IPv6, but the ability to not have a NAT is not a good one. I absolutely want everything on my network to be behind at least one layer of NAT. When setting up a router, I have two choices of internet protocol versions:

    Choice A: If I set it up right, everything is behind a NAT.  If I set it up wrong, there is no connection to the internet.

    Choice B: If I set it up right, everything is behind a NAT.  If I set it up wrong, Everything gets directly exposed to the internet.

Someday I'll get around to learning how to properly set up an IPv6 LAN, but until then, I'll just use the default IPv4 setting.