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The command that displays local interface information is indeed "ifconfig." This command is used primarily in Unix and Linux operating systems to configure and display the network interfaces on the machine. When executed, it provides detailed information about the various network interfaces, such as IP addresses, MAC addresses, and other configuration details, allowing network administrators to diagnose and troubleshoot network issues effectively.

Using ifconfig, you can easily see the status of each interface, whether it is up or down, and obtain real-time statistics on packets transmitted and received, among other information. It is a fundamental tool in network management and monitoring, particularly in environments running Unix-like systems.

The other options either pertain to different networks or systems or do not specifically focus on displaying local interface information. For example, "interfaces" alone is too vague and does not represent a standard command in itself. Similarly, "route" is used to display or manipulate the IP routing table rather than to give details about network interfaces. The "ipconfig" command is relevant for Windows systems, serving a purpose similar to that of ifconfig, but it is not the correct answer in the context of Unix and Linux interfaces.