Creating or modifying a loopback interface
Loopback interfaces may be used, for example, in dynamic routing configurations.
To create or modify a loopback interface, click on the “Loopback” tab.
Button bar
| Search | Search that covers interfaces. |
| Add | Adds an “empty” interface. An added interface (sending of a command) is effective only if its fields Name and IP address have been entered. |
| Delete | Deletes one or several selected interfaces. Use the keys Ctrl/Shift + Delete to delete several interfaces. |
| Check usage | Represented by the icon  , this button indicates whether the selected interface is being used elsewhere in the configuration. |
| Apply | Sends the configuration of the IPsec interfaces. |
| Cancel | Cancels the configuration of the IPsec interfaces. |
Interactive features
Some operations listed in the taskbar can be performed by right-clicking on the table of loopback interfaces:
- Add,
- Delete,
- Check usage.
Presentation of the table
The table sets out four fields of information:
| Status | Status of the interfaces:
|
| Name(mandatory) | Give the loopback interface a name. |
| IPv4 address (mandatory), | Enter the IP address assigned to the loopback interface created. |
| Comments(optional) | Any text. |
Enabled: Double-click to enable the created interface. 
Disabled: The interface is not in operation. The line will be grayed out in order to reflect this.