As we've seen so far, there are at least two different network drivers that are inherently part of every Docker installation, bridge, and host. In addition to those two, while not defined initially because of prerequisites, there is another Driver overlay that is available out-of-the-box as well. Later recipes in this chapter will cover specifics regarding the bridge and overlay drivers.
Because it wouldn't make sense to create another iteration of the host network using the host Driver, the built-in user-defined networks are limited to the bridge and overlay drivers. In this recipe, we'll show you the basics of creating a user-defined network as well as options that are relevant to the network create and network rm Docker subcommands.