No, Ubuntu does not backport major systemd versions to stable LTS. This would have a huge impact on the reliability of the stable release..
Should we be able to identify the specific commits/changes in systemd 256/257 that fixed this behavior, we could request those to be included and tested in a future systemd SRU, though. Let me add some systemd SRU tasks to this bug report. Feel free to help identifying the relevant changes. ** Also affects: systemd (Ubuntu) Importance: Undecided Status: New ** Also affects: systemd (Ubuntu Plucky) Importance: Undecided Status: New ** Also affects: wireguard (Ubuntu Plucky) Importance: Undecided Status: Expired ** Also affects: systemd (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: wireguard (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: systemd (Ubuntu Oracular) Importance: Undecided Status: New ** Also affects: wireguard (Ubuntu Oracular) Importance: Undecided Status: New ** Changed in: wireguard (Ubuntu Oracular) Status: New => Invalid ** Changed in: wireguard (Ubuntu Noble) Status: New => Invalid ** Changed in: systemd (Ubuntu Plucky) Status: New => Fix Released ** Changed in: systemd (Ubuntu Oracular) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2091987 Title: group and mode of /etc/wireguard incompatible with systemd To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/2091987/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs