There is definitely a "daemon-reload" happening in the same second when the problem happens. So it is probably caused by a race condition:
Sep 5 05:55:40 MonacoSIT4 systemd[1]: Reloading. Sep 5 05:55:40 MonacoSIT4 snapd[3467]: overlord.go:271: Acquiring state lock file Sep 5 05:55:40 MonacoSIT4 snapd[3467]: overlord.go:276: Acquired state lock file Sep 5 05:55:40 MonacoSIT4 dbus-daemon[3447]: [system] Successfully activated service 'org.freedesktop.hostname1' ... Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <info> [1725530140.8525] manager: rfkill: Wi-Fi enabled by radio killswitch; enabled by state file Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <info> [1725530140.8525] manager: rfkill: WWAN enabled by radio killswitch; enabled by state file Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <info> [1725530140.8526] manager: Networking is enabled by state file Sep 5 05:55:40 MonacoSIT4 dbus-daemon[3447]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.5' (uid=0 pid=3448 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined") Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <info> [1725530140.8536] settings: Loaded settings plugin: ifupdown ("/usr/lib/x86_64-linux-gnu/NetworkManager/1.36.6/libnm-settings-plugin-ifupdown.so") Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <info> [1725530140.8536] settings: Loaded settings plugin: keyfile (internal) Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <info> [1725530140.8536] ifupdown: management mode: unmanaged Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <info> [1725530140.8538] ifupdown: interfaces file /etc/network/interfaces doesn't exist Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <warn> [1725530140.8548] keyfile: load: "/run/NetworkManager/system-connections/netplan-ens5f1np1.nmconnection": failed to load connection: cannot access file: No such file or directory Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <warn> [1725530140.8548] keyfile: load: "/run/NetworkManager/system-connections/netplan-ens5f0np0.nmconnection": failed to load connection: cannot access file: No such file or directory Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <warn> [1725530140.8548] keyfile: load: "/run/NetworkManager/system-connections/netplan-ens4f1np1.nmconnection": failed to load connection: cannot access file: No such file or directory Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <warn> [1725530140.8548] keyfile: load: "/run/NetworkManager/system-connections/netplan-ens4f0np0.nmconnection": failed to load connection: cannot access file: No such file or directory Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <warn> [1725530140.8548] keyfile: load: "/run/NetworkManager/system-connections/netplan-ens3f1np1.nmconnection": failed to load connection: cannot access file: No such file or directory Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <warn> [1725530140.8548] keyfile: load: "/run/NetworkManager/system-connections/netplan-ens3f0np0.nmconnection": failed to load connection: cannot access file: No such file or directory Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <warn> [1725530140.8549] keyfile: load: "/run/NetworkManager/system-connections/netplan-ens2f1np1.nmconnection": failed to load connection: cannot access file: No such file or directory Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <warn> [1725530140.8549] keyfile: load: "/run/NetworkManager/system-connections/netplan-ens2f0np0.nmconnection": failed to load connection: cannot access file: No such file or directory Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <warn> [1725530140.8549] keyfile: load: "/run/NetworkManager/system-connections/netplan-ens1f1np1.nmconnection": failed to load connection: cannot access file: No such file or directory Sep 5 05:55:40 MonacoSIT4 NetworkManager[3448]: <warn> [1725530140.8549] keyfile: load: "/run/NetworkManager/system-connections/netplan-ens1f0np0.nmconnection": failed to load connection: cannot access file: No such file or directory -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/2083129 Title: [Lenovo Ubuntu 22.04.4 Bug] netplan static IP address assignment use NetworkManager as renderer would be lost static ip Status in netplan.io package in Ubuntu: New Status in network-manager package in Ubuntu: Invalid Status in netplan.io source package in Jammy: New Status in network-manager source package in Jammy: Invalid Bug description: On Ubuntu 22.04.4, to configure a system to use static address assignment, create a netplan configuration in the file, like /etc/netplan/00-installer-config.yaml. After assigning the network configuration abstraction renderer to NetworkManager not networkd in /etc/netplan/00-installer-config.yaml, then we do warm reboot test, some of the NIC interface lost their static ip in some reboot cycles when the rendered is NetworkManager, but networkd as a renderer is works well, all NIC interfaces can get their corresponding IP that configured in netplan confile file. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/netplan.io/+bug/2083129/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp