Seems its not "low importance" bug. 🤕 Updating systemd package can trigger such bug, and if you have a unattended-upgrade it's gonna cause a network flap on that host. Easy to reproduce it with: # apt install --reinstall systemd
---------------------------------- Distributor ID: Ubuntu Description: Ubuntu 22.04.2 LTS Release: 22.04 Codename: jammy systemd 249 (249.11-0ubuntu3.9) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/2003250 Title: networkctl reload with bond devices causes slaves to go DOWN and UP, causing couple of seconds of network loss Status in systemd package in Ubuntu: Triaged Status in systemd source package in Jammy: Triaged Status in systemd source package in Kinetic: Triaged Bug description: We currently use Ubuntu 22.04.1 LTS including updates for our production cloud (switched from legacy Centos 7). Although we like the distribution we recently hit serious systemd buggy behavior described in [1] bugreport using packages [2]. Unfortunatelly the clouds we are running consist of openstack on top of kubernetes and we need to have complex network configuration including linux bond devices. Our observation is that every time we apply our configuration via CI/CD infrastructure using ansible and netplan (regardless whether there is actual network configuration change) we see approximatelly 8-16 seconds network interruptions and see bond interfaces going DOWN and then UP. We expect bond interfaces stay UP when there is no network configuration change. We went though couple of options how to solve the issue and the first one is to add such existing patch [3] into current systemd-249.11-0ubuntu3.6. Could you comment whether this kind of non-security patch is likely to land in 22.04.1 LTS soon. We are able to help to bring patch into systemd package community way if you suggest the steps. [1] https://github.com/systemd/systemd/issues/25067 [2] Packages root@controlplane-001:/etc/apt0# apt list | grep -E '^(systemd/|netplan.io)' netplan.io/jammy-updates,now 0.105-0ubuntu2~22.04.1 amd64 [installed,automatic] systemd/jammy-updates,now 249.11-0ubuntu3.6 amd64 [installed,automatic] [3] https://github.com/systemd/systemd/pull/25162 [4] # lsb_release -rd Description: Ubuntu 22.04.1 LTS Release: 22.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/2003250/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
