I believe I faced this bug too on Xenial with kernel 4.10.0-26-generic on amd64. We use multiple multiqueue virtual adapters per VM so only partial connectivity loss occurs.
With systemtap I can see that on host last_used_event from patch equals to 0x0 on one of the queues, and guest receiving 0x1 as return value for that queue from __dev_queue_xmit which I beleve is NET_XMIT_DROP. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1711251 Title: vhost guest network randomly drops under stress (kvm) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1711251/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
