No, I think we cannot gather much more data and logs than we already did. (Except the ude rules themselves, but they will not change with a kernel update.)
I am relatively confident that this is not an netplan issue since I verified the files in /run/systemd/network/ and the look good and fit nicely to the yaml. I found a similar upstream issue, checking if this is close enough. I'm gonna reach out to another team and will discuss some potential next steps. So you can (and should) update, since the 5.4.0-74 is a significant update (and incl. the upstream stable patches from v5.4.107 to .114). And please watch out for any behavioral changes regarding the udev rules and the address assignments! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1929657 Title: [Ubuntu 20.4.2] vLan not getting static IP assigned (on s390x) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1929657/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs