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[openstack] libvirt NIC can not send any package out when we do long time perfotmance


Hi stackers

      we use libvirt virtio: virtual network NIC, and we do long time(>
30mins ) performance about traffic bandwidth test, and then ,we found vm
lost it's ip (which is get from dnsmasq[running in the host , bind br100
briage] by vm dhclient) and vm can not post and package out from the vm,

Tommy Bao


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