I just tried setting the buffer size to 256k instead of 128k, and everything works. I posted a patch:
https://www.redhat.com/archives/libvir-list/2018-April/msg02459.html This should be safer than not setting the buffer size when using older libpcap versions that might have a very small default buffer size, and should place too much of a burden on hosts that use a new libpcap (even 1000 guests with CTRL_IP_LEARNING turned on would only use 128MB more memory than they do now). Does this seem reasonable? -- 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/libvirt/+bug/1758037/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
