FortiGate
FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
shahrukh_khan
Article Id 385188
Description This article describes the essential measures to take when dealing with loopback interfaces, especially since the delete option is not available for them.
Scope FortiGate.
Solution

When creating a Loopback interface, enabling the 'Create address object matching subnet' option triggers the automatic generation of an address object that corresponds to the specified subnet.

 

Loopback.png

 

This address object can be accessed and verified under the Policy & Objects section, specifically within the Addresses tab.

 

Loopback-3.png

 

It is crucial to understand that the presence of this address object restricts the deletion of the Loopback interface.

 

Loopback-2.png

 

In order to successfully delete the Loopback interface, it is necessary to first remove the associated address object. Failure to do so will result in an inability to delete the Loopback interface, as the system requires that all dependencies be resolved beforehand. Therefore, the proper sequence of actions is to locate and delete the relevant address object before attempting to remove the Loopback interface itself.