Thanks for sharing your findings. What you found out is indeed interesting, however I'm not sure you can say the change happened in modprobe, as you are using two different kernel versions. Perhaps insmod and modprobe always behaved differently, and what changed is what the kernel does.
Your suggestion for a more robust handling of dummy interfaces makes sense, however even if this were done I don't think your use case alone would be enough to justify an upgrade in Bionic (a so-called Stable Release Upgrade). On the other side, newer releases of Ubuntu are switching from ifupdown to netplan, so at this point it is unlikely that any active work will be put into ifupdown unless there is a compelling reason to do so. Should a wider-impact use case come up then we will certainly re- evaluate the importance of this report. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1828749 Title: ifconfig dummy0 : Device not found To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1828749/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
