Hi guys, Recently I got a strange problem in StarlingX. When I reboot one VM with two physical pci-passthrough NICs, then all of VMs cannot be connected. I lost connections with all VMs and also the VMs lost each others. Below is the StarlingX environment. 1. stx1.0 version, bootimage[1] 2. Simplex deployment 3. 5 Network ports. Only one don’t support DPDK，and it is used to OAM Network. In the rest, two are used to data network, and another two are used to passthrough to a VM. 4. The VM was attached two more virtual networks. I have tested the case of attaching one virtual net, it was no problem. When I reboot the VM, something were happened. The interfaces and bridges were down, all the virtual dhcp services were down and ovs-vswitchd was restarted. But when I up the interfaces and dhcp services and reboot the other VMs, I have got the connections with them again. It’s ok when to reboot the VM without physical NIC. We think it may be caused by ovs-dpdk, so we stop to use ovs-dpdk and start the ovs manually, the problem was gone. I cannot understand the problem, anybody could give me some comments for it? Thanks a lot. [1] http://mirror.starlingx.cengn.ca/mirror/starlingx/r2018.10/centos/2018.10.0/... <http://mirror.starlingx.cengn.ca/mirror/starlingx/r2018.10/centos/2018.10.0/outputs/iso/bootimage.iso> Kunpeng