debcrafters-packages team mailing list archive

[Launchpad Bug Tracker <2110517@xxxxxxxxxxxxxxxxxx>]

You have been subscribed to a public bug:

network-manager/noble-updates,now 1.46.0-1ubuntu2.2 amd64
netplan.io/noble-updates,now 1.1.2-2~ubuntu24.04.1 amd64

Using the Network Manager GUI I created an Ethernet-WiFi active-backup
bond.  To set the primary interface, I had to use the workaround
described in Bug #2098093
(https://bugs.launchpad.net/ubuntu/+source/network-
manager/+bug/2098093).  Then, I used a script in
/usr/lib/NetworkManager/dispatcher.d/ to make the Ethernet and WiFi
mutually exclusive.

When I unplugged the Ethernet cable, the wired connection was
automatically disabled, the NetworkManager-dispatcher service ran the
script, and my WiFi was enabled and connected.  When I plugged in the
cable, the wired connection was automatically enabled, the script was
run, and WiFi was disabled.  This was working since February until the
past week or two, when I ran apt update/upgrade, which included a
netplan.io upgrade from 1.1.1-1~ubuntu24.04.1 to 1.1.2-2~ubuntu24.04.1.
I did not modify the bond settings, or any other network settings, in
this time.

Now, when I unplug the LAN, the wired connection is not automatically
disabled, and the dispatcher script is not run.  Here is the complete
output of journalctl --follow when I unplug the cable:

May 13 01:27:54 Host kernel: e1000e 0000:00:19.0 enp0s25: NIC Link is Down
May 13 01:27:54 Host kernel: bond0: (slave enp0s25): link status definitely down, disabling slave
May 13 01:27:54 Host kernel: bond0: now running without any active interface!

Nothing more happens, and the wired connection remains enabled.  If I
manually disable the wired connection, then plug the cable back in, I
get this from journalctl --follow:

May 13 01:35:09 Host kernel: e1000e 0000:00:19.0 enp0s25: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Txq
May 13 01:35:09 Host NetworkManager[1572]: <info>  [1747114509.8554] device (enp0s25): carrier: link connected

Nothing more is printed, and the wired connection remains disabled.  I
have to manually enable the wired connection to get the NetworkManager-
dispatcher to activate.

This changed behaviour is *only* for my bonded interface.  If I use the
Network Manager GUI to create a standard Ethernet Connection, and unplug
the cable, I get:

May 13 01:45:10 Host kernel: e1000e 0000:00:19.0 enp0s25: NIC Link is Down
May 13 01:45:16 Host NetworkManager[1572]: <info>  [1747115116.5801] device (enp0s25): state change: activated -> unavailable (reason 'carrier-changed', sys-iface-state: 'managed')

As expected, the non-bonded wired connection is automatically disabled,
NetworkManager-dispatcher is activated, and my WiFi is enabled by the
script (and I experience a brief moment of Linux Zen).

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
-- 
Wired connection in bonded interface not disabled/enabled when cable unplugged/plugged-in
https://bugs.launchpad.net/bugs/2110517
You received this bug notification because you are a member of Debcrafters packages, which is subscribed to network-manager in Ubuntu.