https://bugs.kde.org/show_bug.cgi?id=478207
Bug ID: 478207
Summary: Unable to connect to to Ethernet networks at the same
time
Classification: Plasma
Product: plasma-nm
Version: 5.27.9
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: applet
Assignee: plasma-b...@kde.org
Reporter: matti.vilja...@kapsi.fi
Target Milestone: ---
Created attachment 163975
--> https://bugs.kde.org/attachment.cgi?id=163975&action=edit
Network applet with one WiFi and two Ethernet connections.
SUMMARY
I have an integrated Ethernet card, which is connected to a local LAN with
Internet connectivity using DHCP. I also have another, USB-connected device
which presents itself as an Ethernet device and provides DHCP as well. When I
am connected to my local wired Ethernet, I'm unable to be connected with the
other Ethernet device, because when I click 'Connect' in the Network applet for
one connection, the other connection always automatically disconnects.
See the attached picture - when I click connect on one situation, the result is
always the other situation. Note that I changed the name of the connections,
but that shouldn't affect the issue here.
(I expect this applies to any two/multiple same-type connections, but I have no
way of testing this.)
STEPS TO REPRODUCE
1. Have a computer with two Ethernet cards
2. Have one Ethernet card connected to LAN (with Internet access)
3. Connect the second Ethernet card to anoether, separate, non-overlapping LAN
(without Internet access)
4. Click Connect for the second Ethernet device in the Network applet
OBSERVED RESULT
Both Ethernet devices are connected andNetwork applet shows both devices as
connected.
EXPECTED RESULT
The first connection gets disconnected, leaving only the second device is
connected (or one-at-a-time, if you will).
SOFTWARE/OS VERSIONS
Linux: Manjaro Plasma (up-to-date as of 2023-12-07)
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.112.0
Qt Version: 5.15.11
ADDITIONAL INFORMATION
The same setup resulted in two connected networks back when I used Manjaro
Gnome. The current setup with Manjaro Plasma is a fresh install to eliminate
any issues from trying to just switch the desktop.
I assume there is a way to make this happen in System Settings - Connections,
but it is not obvious to me how it can be done. Possibly something related to
"Restrict to device" setting?
Note that the two networks use non-overlapping private IP address spaces, DHCP,
and only one has Internet connectivity - routing is therefore a non-issue.
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