This is the first part of a two-part installment exploring the second layer in the TCP/IP stack, the Internet Layer, and most importantly, the IP protocol. In particular we focus on the vitally important, but often confusing, concept of IP subnets. If you understand subnets, home networking becomes simple and obvious, if you don't it seems like black magic!

As always, you can get to Bart's fabulous tutorial shownotes at ttt.bartificer.net/...