# So, subnetting.

Let's say we're given the addressblock starting at 192.192.192.0, or `FF FF FF
00`. This gives us a full byte of addresses to assign as we see fit, excluding
network-address and broadcast-address, this leaves 254 hosts that could be
given addresses.

Now let's also say we need to connect four subnets, and give them all addresses
out of that block. So, we take 2 bits from our 8 freely-assignable ones, and
use them to encode these subnets. 00 is the first, 01 is the second, 10 is the
third, and 11 finally the fourth. This now leaves six bits to uniquely identify
hosts, but we have four subnets to do it in.

This means we now have a subnet mask of `FF FF FF C0`, with the two bits we
took away from our block used to identify subnets, for a maximum of 4 * 64 - 8
= 248 uniquely addressable hosts. (8 Hosts subtracted due to
network-identifiers and subnet-broadcast addresses?)

# Questions

- What's the notation for subnets? In the example given above, it is my
  understanding that it's a "/8" Subnet?
- Do manually-subnetted subnets have a network identifier and broadcast
  address, or are those addresses that could be handed out?