Setting Up dynamic and static IP address for RPZ

Now that we have our Raspberry Pi Zero on the network, let's look a little closer at what we can do with the networking. Everything should have connected to your Wi-Fi network thanks to DHCP (Dynamic Host Allocation Protocol). DHCP takes incoming requests from devices to be added to the network. It has a pool of IP addresses on the network that it will "lease" to the device for a period of time. After the lease expires, the device may renew (and, depending on the DHCP server rules, will get a new or the same address), or the address will be returned to the available pool. This makes it easy to add machines to a network without keeping track of individual addresses assigned to devices. When your Raspberry Pi Zero connected to your Wi-Fi network, by default, it would have been assigned at least one IP address: an IPv4 address (four sets of numbers between 0 and 255, as in 192.168.17.250), and/or a newer IPv6 address (8 sets of hexadecimal numbers...