---
title: "Breaking: #91974 - Configuration Option IPmaskMountGroups removed"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-91974"
source: "Changelog/11.0/Breaking-91974-ConfigurationOptionIPmaskMountGroupsRemoved.rst"
modified: "2026-09-15T10:46:36+00:00"
---

# Breaking: #91974 - Configuration Option IPmaskMountGroups removed

See [forge#91974](https://forge.typo3.org/issues/91974)

## Description

The global configuration option `$GLOBALS['TYPO3_CONF_VARS']['FE'][IPmaskMountGroups]` has been removed. It allowed to automatically assign
groups to users visiting the TYPO3 Frontend from specific IP addresses / networks.

This is especially handy to show content only in Intranet/Extranet
sites where internal members see restricted content automatically.

However, showing content based on certain contexts is usually solved with a much more flexible way through third-party extensions
such as EXT:contexts. Third-party extensions allow even for automatic login based on IP-addresses, which should be used instead.

## Impact

The mentioned option is automatically removed from `LocalConfiguration.php`
on upgrade, and not evaluated anymore.

## Affected Installations

Installations having the global configuration setting set in
`typo3conf/LocalConfiguration.php` or `typo3conf/AdditionalConfiguration.php`, mostly related to intranet / extranet websites.

## Migration

If this functionality explicitly is required, it can be provided by a third-party extension, or a custom extension registering
a AuthenticationService ("getGroupsFE") to assign the groups on a more specific approach.