We've Run Out Of Addresses ?

Indeed,  we have run out of addresses.

IP addresses, the ones that really count are all gone.

 IPV4 (192.168.0.1) has been exhausted.

We simply have too many toys,  and so we

can set about exhausting IPV6

( 2001:0db8:85a3:0000:0000:8a2e:0370:7334).

Actually, a nice LAN safe address like 10.10. or 192.168 is now  a ULA.

 (gotta have more TLA's)

c00::/7 — Unique local addresses (ULAs) are intended for local communication. They are routable only within a set of cooperating sites (analogous to the private
address ranges 10/8, 172.16/12, and 192.168/16 of IPv4).^[

The addresses include a 40-bit pseudorandom number in the routing prefix intended to minimize the risk of conflicts if sites merge or packets are misrouted into the Internet.

Just when I thought I had subnet masking

down cold.

We start Tomorrow.

Here's one place you can start now : Webopedia on IPV6
and, of for another helping : Wikipedia on IPv6.