Thank you for taking the time to report this bug and helping to make Ubuntu better.
Please could you provide an example of reproduction steps showing the behaviour you're expecting working with "This worked fine until recently"? Perhaps you'll need an older Ubuntu release, older kernel package, or older net-tools package to do this. Once done, please change the bug status back to New. ifconfig is still maintained but deprecated in favour of ip(8). So while this may well be a valid bug that we should fix, I don't think it is of high importance any more, unless it is a regression caused by an update in an existing stable release (and there's no evidence of that in your report). So I'm setting Importance: Low for now. ** Changed in: net-tools (Ubuntu) Status: New => Incomplete ** Changed in: net-tools (Ubuntu) Importance: Undecided => Low -- 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/net-tools/+bug/1828749/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs