Hi, I might have found a way to reproduce the problem. I believe that, at some point, the FortiClient plugging is trying to create a Network Manager connection for a virtual interface (such as a dummy device or something like that) that already exists. That is not a problem with FortiClient though.
# nmcli con add type dummy ifname dummy0 Connection 'dummy-dummy0' (7181013d-c81e-4386-9961-6e3740e3851d) successfully added. # nmcli con add type dummy ifname dummy0 Error: Failed to add 'dummy-dummy0-1' connection: Message recipient disconnected from message bus without replying # journalctl -u NetworkManager ... Dec 02 12:25:37 plucky-nm NetworkManager[2186]: ** Dec 02 12:25:37 plucky-nm NetworkManager[2186]: nm:ERROR:../src/core/settings/nm-settings-utils.c:103:<unknown-fcn>: assertion failed: (<dropped>) Dec 02 12:25:37 plucky-nm NetworkManager[2186]: Bail out! nm:ERROR:../src/core/settings/nm-settings-utils.c:103:<unknown-fcn>: assertion failed: (<dropped>) Dec 02 12:25:37 plucky-nm systemd[1]: NetworkManager.service: Main process exited, code=dumped, status=6/ABRT Dec 02 12:25:37 plucky-nm systemd[1]: NetworkManager.service: Failed with result 'core-dump'. ... I believe that, because it's a new connection with a different UUID, Network Manager will try to create a new .nmconnection file with the same name of one that already exists in /run/NetworkManager. Because there are 2 files with the same name it will fail here [1]. We will investigate it from our end. Thanks! [1] - https://github.com/NetworkManager/NetworkManager/blob/1.50.0/src/core/settings/nm- settings-utils.c#L103 ** Changed in: network-manager (Ubuntu) Status: New => Confirmed ** Changed in: network-manager (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2089930 Title: NetworManager crashes when modifing connection (ipv4.ignore-auto- routes yes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/2089930/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
