I tested this on Xenial, Artful and Bionic. In Bionic and Artful it breaks as shown before: error: Failed to start domain bg error: An error occurred, but the cause is unknown In Xenial as well - it just takes much longer.
So this is at least not a regression. Note: the feature itself is rather old, since [1] (2012) Still all I see is: Apr 20 09:14:21 b libvirtd[4207]: Warning: Kernel filter failed: Bad file descriptor Apr 20 09:14:21 b libvirtd[4207]: 4379: error : virNWFilterSnoopDHCPOpen:1130 : internal error: pcap_setfilter: can't remove kernel filter: Bad file descriptor With debug enabled the log does not hold more info. The code in that area prepares (compile) and sets the filters. The handle is created with handle = pcap_create(ifname, pcap_errbuf); And several operations succeed on that handle before the pcap_setfilter fails eventually. I wondered if this might be due to my KVM-in-LXD setup and tried X/B on Bare metal, to the same effect/error. For this case one would need to debug libvirtd to find what is going on, I'm not sure yet this works/worked anywere (since even latest release is broken atm). For now I'm waiting on a confirmation if there is a known fix (or not) before considering debugging it deeper. If there is no known fix an outline of the important/urgency from the reporters POV would be nice. Given that this seems to never worked I'll rate it rather low for now. [1]: https://www.redhat.com/archives/libvir-list/2012-May/msg01234.html ** Changed in: libvirt (Ubuntu) Status: Incomplete => Confirmed ** Changed in: libvirt (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/1758037 Title: LTC Test- Ubuntu18.04: Starting the guest with network filter defined will fail with "cause is unknown". To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1758037/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
