In Azure, the network settings, such as your IP address and DNS settings, are provided via Dynamic Host Configuration Protocol (DHCP). The configuration is very similar to the configuration of physical machines or VMs running on another platform. The difference is that the configuration is provided by Azure and normally shouldn't be changed.

In this section, you'll learn to identify the network configuration in Linux and how to match that information with the settings in Azure that were covered in the previous chapter.

Identifying the Network Interfaces

During the boot process and afterward, the Linux kernel is responsible for hardware identification. When the kernel identifies the hardware, it hands the collected information over to a process, a running daemon (background process), called systemd-udevd. This daemon does the following:

• Loads the network driver if necessary.
• It can assume responsibility for device naming.
• Updates /sys with...