In previous versions it was possible to show connections like vlan-connections in the NM-applet, through some advanced configuration which had "Show virtual connections". I'm fine if this is hidden behind something for "advanced" or even only configurable in config-files. I've used vlan-interfaces (for a bridged interface) for quite some time for professional work and need it. I can configure those vlan-connections through the connections-editor but just can't show the status of those connections (or bring them down/up again) using the applet. Doing the same with nmcli works without problems. To what I found it seems to be a hardcoded filter. There was an advanced-option in previous versions (KDE 5 maybe still?).
After another reboot they magically appeared in the connection-list (in the applet). Could it be that they don't show up when newly created through the connection-editor? I faced the problem that vlans could be configured and be brought up through nmcli but the applet didn't show vlans at all - now they appear.
In the "Configure Networks" screen there's a "Configuration" button, when clicking on it it will show a dialog with the option "show virtual connections". When creating a new virtual connection from that screen, it automatically enables this option as well. However, it seems the applet doesn't get notified when that option changes, requiring a restart of Plasma for it to actually pick up the changes.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-nm/-/merge_requests/527
Git commit 9e0176af5430630992910136f905d5c2d4348959 by Arjen Hiemstra. Committed on 23/02/2026 at 12:10. Pushed by ahiemstra into branch 'master'. libs/models: Respond to changes to the "show virtual connections" setting This can be set by the KCM, but the applet would not react to any changes. Now that we've properly hooked up the config notification, invalidate the filter if the setting changes, so that we re-evaluate "UiUtils::isConnectionTypeSupported()" for all connections. M +10 -0 libs/models/appletproxymodel.cpp M +3 -0 libs/models/appletproxymodel.h https://invent.kde.org/plasma/plasma-nm/-/commit/9e0176af5430630992910136f905d5c2d4348959
Git commit ca6c2c034dc41fb3dba435e7a3fca34ee5d86b89 by Arjen Hiemstra. Committed on 23/02/2026 at 14:10. Pushed by ahiemstra into branch 'Plasma/6.6'. libs/models: Respond to changes to the "show virtual connections" setting This can be set by the KCM, but the applet would not react to any changes. Now that we've properly hooked up the config notification, invalidate the filter if the setting changes, so that we re-evaluate "UiUtils::isConnectionTypeSupported()" for all connections. (cherry picked from commit 9e0176af5430630992910136f905d5c2d4348959) Co-authored-by: Arjen Hiemstra <ahiemstra@heimr.nl> M +10 -0 libs/models/appletproxymodel.cpp M +3 -0 libs/models/appletproxymodel.h https://invent.kde.org/plasma/plasma-nm/-/commit/ca6c2c034dc41fb3dba435e7a3fca34ee5d86b89