The commands in this section describe how to create, delete, and manage loopback interfaces. A loopback interface is always expected to be up. This interface can provide the source address for sent packets and can receive both local and remote packets. The loopback interface is typically used by routing protocols.
To assign an IP address to the loopback interface, see ip address. To assign an IPv6 address to the loopback interface, see ipv6 address.
