> Source: [sk111161](https://support.checkpoint.com/results/sk/sk111161)

# sk111161 - "[interface name] cannot be deleted, it is in use by protocol IGMP" error when trying to delete an interface in CLISH

| Property | Value |
|----------|-------|
| Solution ID | sk111161 |
| Date Created | 2016-05-02 |
| Last Modified | 2020-06-24 |
| Technical Level | Advanced |
| Products | Security Gateway, Security Management Server |
| Versions | R82.10, R82, R81.20, R82.10, R82, R81.20, R82.x, R82.20 |
| OS | Gaia |

## Symptoms

- * When trying to delete an interface in CLISH, the error "\[interface name\] cannot be deleted, it is in use by protocol IGMP" is displayed.
* Running the command:  
  `# grep "igmp:interface:[eth_name]" /config/active`  
  Shows that IGMP is configured on the interface. For example:  
  `routed:instance:default:igmp:interface:eth0 t`
* The interface can be deleted in Gaia WebUI

## Cause

IGMP is enabled on the interface which prevents it's deletion.  

It is not possible to delete the interface without turning off IGMP on the interface first.  

It is possible to delete it in the Gaia WebUI as the WebUI performs multiple commands simultaneously and automatically removes the IGMP configuration from the interface before deleting it.

## Solution

This solution requires authentication. Please log in to view the full solution.

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