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Fedora 40 adopts `stable-ssid` as the default mode for assigning individual, stable MAC addresses to Wi-Fi connections in NetworkManager, enhancing user privacy without compromising network stability.
The change adds a new file, `/usr/lib/NetworkManager/conf.d/22-wifi-mac-addr.conf`, which sets `wifi.cloned-mac-address=stable-ssid` as the default mode for MAC address selection in Wi-Fi connections within NetworkManager. The `stable-ssid` mode generates a different MAC address based on each SSID it uses to connect to a network, which is designed to enhance user privacy by making it more difficult for users to be tracked across networks by their hardware MAC address.
This new default value overrides the NetworkManager default of `preserve` and is applied to all existing and new Wi-Fi profiles in Fedora 40 and later that do not override the default, such as by cloning a specific MAC address in the NetworkManager GUI or independently setting `wifi.cloned-mac-address`.
With the adoption of `stable-ssid` as the default in Fedora 40, upgrading to Fedora 40 will apply this new MAC address generation by default, including on existing Wi-Fi profiles. This can result in potentially breaking changes to Wi-Fi connection behavior, particularly for users of networks with features or restrictions that rely on the device's prior default MAC address.
Users who must maintain consistent MAC addresses for specific networks can address this by manually setting `wifi.cloned-mac-address` to `permanent` for specific profiles:
nmcli connection modify [$PROFILE] wifi.cloned-mac-address permanent
Replace `[$PROFILE]` with the NetworkManager profile name, which is typically the SSID. To list profiles by name, run `nmcli connection`.
To revert to previous behavior, override the new default by following one of these steps:
Create a custom configuration file in `/etc/NetworkManager/conf.d/22-wifi-mac-addr.conf`, which can be empty or contain specific configurations. This prevents Fedora from loading its default file in `/usr/lib`.
Create a higher priority .conf file, such as `/etc/NetworkManager/conf.d/90-wifi-mac-addr.conf`, which sets `wifi.cloned-mac-address`:
[connection-90-wifi-mac-addr-conf]
wifi.cloned-mac-address=permanent
For details on the order in which configuration files are loaded and their priority, refer to `man NetworkManager.conf`. For other available `wifi.cloned-mac-address` options, see the [NetworkManager documentation](https://networkmanager.dev/docs/api/1.46/settings-802-11-wireless.html).
PostgreSQL 16
Fedora 40 provides version 16 of PostgreSQL. For more information, see the link:++https://www.postgresql.org/docs/16/release-16.html++[upstream release notes].
SPDX Migration
RPM packages use SPDX identifiers for licenses as a standard. 63 % of the packages and almost all packeges from ELN set have been migrated to link:++https://spdx.org/licenses/++[SPDX identifiers]. The remaining packages are estimated to be migrated to SPDX in Fedora 41.

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  1. fedora-docs-l10n/fedora-release-notes
  2. f40/pages/sysadmin
  3. English

typo "... all packeges ..." --> "all packages"

a month ago
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  1. fedora-docs-l10n/fedora-release-notes
  2. f40/pages/sysadmin
  3. English
RPM packages use SPDX identifiers for licenses as a standard. 63 % of the packages and almost all packeges from ELN set have been migrated to link:++https://spdx.org/licenses/++[SPDX identifiers]. The remaining packages are estimated to be migrated to SPDX in Fedora 41.
RPM packages use SPDX identifiers for licenses as a standard. 63 % of the packages and almost all packeges from ELN set have been migrated to link:++https://spdx.org/licenses/++[SPDX identifiers]. The remaining packages are estimated to be migrated to SPDX in Fedora 41.
a month ago
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User avatar atriwidada

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typo "... all packeges ..." --> "all packages"

a month ago

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type: Plain text
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read-only
Source string location
./pages/sysadmin.adoc:220
String age
a month ago
Last updated
3 weeks ago
Source string age
a month ago
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pot/f40/pages/sysadmin.pot, string 94