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Configuring a Loopback Interface
You must configure a loopback interface for use in the subscriber access network. The loopback interface is automatically used for unnumbered interfaces.
If you are using routing instances, you can configure the loopback interface for the default routing instance or for a specific routing instance. The following procedure adds the loopback interface to the default routing instance.
To configure a loopback interface:
- Create the loopback interface, and assign a unit number
to the interface. [edit]user@host# edit interfaces lo0 unit 0
- Configure the interface for IPv4.[edit interfaces lo0 unit 0]user@host# set family inet unnumbered-address
- Configure the interface for IPv6.[edit interfaces lo0 unit 0]user@host# set family inet6 unnumbered-address
