Bug 465655

Summary:	loopback interface shown with virtual interfaces disabled
Product:	[Plasma] plasma-nm	Reporter:	gudvinr+kde
Component:	applet	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED FIXED
Severity:	normal	CC:	alex.dewar, bugseforuns, fkrueger, nate, ngompa13, nicolas.fella, shigerukazuhiro, spittingverse, wsalmeida
Priority:	NOR
Version:	5.26.5
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:	https://invent.kde.org/plasma/plasma-nm/commit/f8a864ebbb36866a3c25ca58ba5059b4a5272b5a	Version Fixed In:	5.27.1

Description gudvinr+kde 2023-02-13 07:57:21 UTC

SUMMARY

In both editor and applet I see "lo" interface which is link/loopback with address 127.0.0.1/8 and I have "show virtual connections" checkbox disabled.
And I never even enabled it, actually.

STEPS TO REPRODUCE
1.  Open connection list

OBSERVED RESULT
I see loopback interface and can interact with it

EXPECTED RESULT
No loopback interface is shown

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.102.0
Qt Version: 5.15.8
Kernel Version: 6.1.11-zen1-1-zen (64-bit)
Network Manager Version: 1.42.0
Graphics Platform: Wayland

Comment 1 spittingverse@gmail.com 2023-02-14 01:56:09 UTC

I am experiencing the same thing.

Operating System: Arch Linux
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.102.0
Qt Version: 5.15.8
Kernel Version: 6.1.11-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5600 6-Core Processor
Memory: 15.5 GiB of RAM
Graphics Processor: AMD Radeon RX 6650 XT
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: B550M DS3H AC
System Version: -CF

Network Manager Version: 1.42.0-1

Comment 2 Bug Janitor Service 2023-02-15 15:36:18 UTC

A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-nm/-/merge_requests/217

Comment 3 Patrick Silva 2023-02-15 16:02:57 UTC

*** Bug 465597 has been marked as a duplicate of this bug. ***

Comment 4 Nicolas Fella 2023-02-16 17:42:17 UTC

*** Bug 465856 has been marked as a duplicate of this bug. ***

Comment 5 Nicolas Fella 2023-02-16 17:43:42 UTC

FTR this behavior was introduced by the NetworkManager 1.42 release

Comment 6 ratijas 2023-02-17 10:46:06 UTC

Git commit 57bbd8a07ec7a37071eede01ef399ab2f8fc24f1 by ivan tkachenko, on behalf of David Redondo.
Committed on 16/02/2023 at 15:46.
Pushed by davidre into branch 'master'.

Filter out the loopback device

Quick fix so we can backport it.
FIXED-IN:5.27.1

M  +2    -1    libs/declarative/networkstatus.cpp
M  +5    -0    libs/models/networkmodel.cpp

https://invent.kde.org/plasma/plasma-nm/commit/57bbd8a07ec7a37071eede01ef399ab2f8fc24f1

Comment 7 David Redondo 2023-02-17 10:59:52 UTC

Git commit f8a864ebbb36866a3c25ca58ba5059b4a5272b5a by David Redondo.
Committed on 17/02/2023 at 10:59.
Pushed by davidre into branch 'cherry-pick-57bbd8a0'.

Filter out the loopback device

Quick fix so we can backport it.
FIXED-IN:5.27.1


(cherry picked from commit 57bbd8a07ec7a37071eede01ef399ab2f8fc24f1)

M  +2    -1    libs/declarative/networkstatus.cpp
M  +5    -0    libs/models/networkmodel.cpp

https://invent.kde.org/plasma/plasma-nm/commit/f8a864ebbb36866a3c25ca58ba5059b4a5272b5a

Comment 8 KazuhiroShigeru 2023-02-23 04:05:15 UTC Comment hidden (spam)

(In reply to Nicolas Fella from comment #5)
> FTR this behavior was introduced by the NetworkManager 1.42 release

I also noticed this after my last update. I don't mind having virtual devices or loops, but allow us to hide it at least. thanks that archwiki mentions what it is. I don't want it to show it on my system tray network settings.

Comment 9 KazuhiroShigeru 2023-02-23 04:06:06 UTC Comment hidden (spam)

(In reply to ratijas from comment #6)
> Git commit 57bbd8a07ec7a37071eede01ef399ab2f8fc24f1 by ivan tkachenko, on
> behalf of David Redondo.
> Committed on 16/02/2023 at 15:46.
> Pushed by davidre into branch 'master'.
> 
> Filter out the loopback device
> 
> Quick fix so we can backport it.
> FIXED-IN:5.27.1
> 
> M  +2    -1    libs/declarative/networkstatus.cpp
> M  +5    -0    libs/models/networkmodel.cpp
> 
> https://invent.kde.org/plasma/plasma-nm/commit/
> 57bbd8a07ec7a37071eede01ef399ab2f8fc24f1

how we can apply this fix?

Comment 10 KazuhiroShigeru 2023-02-23 04:10:19 UTC Comment hidden (spam)

(In reply to KazuhiroShigeru from comment #9)
> (In reply to ratijas from comment #6)
> > Git commit 57bbd8a07ec7a37071eede01ef399ab2f8fc24f1 by ivan tkachenko, on
> > behalf of David Redondo.
> > Committed on 16/02/2023 at 15:46.
> > Pushed by davidre into branch 'master'.
> > 
> > Filter out the loopback device
> > 
> > Quick fix so we can backport it.
> > FIXED-IN:5.27.1
> > 
> > M  +2    -1    libs/declarative/networkstatus.cpp
> > M  +5    -0    libs/models/networkmodel.cpp
> > 
> > https://invent.kde.org/plasma/plasma-nm/commit/
> > 57bbd8a07ec7a37071eede01ef399ab2f8fc24f1
> 
> how we can apply this fix?

nvm, noticed that I have to update plasma.

Comment 11 Frank Kruger 2023-02-23 07:23:07 UTC

Thanks for the speedy fix, the loopback interface does not show up in the applet anymore. However, it is still listed in the system settings. I this on purpose?

Comment 12 Nate Graham 2023-02-23 13:55:53 UTC

Not sure. Please submit a new bug report for it if you think it's an issue. Thanks!

Comment 13 KazuhiroShigeru 2023-02-23 14:36:58 UTC

(In reply to Nate Graham from comment #12)
> Not sure. Please submit a new bug report for it if you think it's an issue.
> Thanks!

I don't think so. yet the loop device could or should be listed on it's own category, separeted from the real ethernet devices, and also add a good description to it so users don't get confused about what it is and what it does. I even tried to delete or disconnect it, because there was zero information about it on the plasma settings. had to use archwiki to figure out what it was. as for now, thanks for the quick fix.