[libvirt] two hostdev devices problem

hi, I try to add 2 VF by "hostdev". Networks (vnet0, vnet1) with: <forward mode='hostdev' managed='yes'> <pf dev='eth1'/> ..... Domain: <interface type="network"> <source network="vnet0"/> .... <interface type="network"> <source network="vnet1"/> .... virsh create error: "error: internal error process exited while connecting to monitor: kvm: -device pci-assign,configfd=25,host=01:10.1,id=hostdev0,bus=pci.0,addr=0x4: Duplicate ID 'hostdev0' for device" I am doing somthing wrong? My configs: domain: <domain xmlns:qemu="http://libvirt.org/schemas/domain/qemu/1.0" type="kvm"> <name>one-466</name> <vcpu>1</vcpu> <memory>1781760</memory> <os> <type arch="x86_64">hvm</type> <boot dev="hd"/> </os> <devices> <emulator>/usr/bin/kvm</emulator> <disk type="file" device="disk"> <source file="/nebula/nebula/var//datastores/0/466/disk.0"/> <target dev="hda" bus="virtio"/> <driver name="qemu" type="raw" cache="default"/> </disk> <disk type="file" device="disk"> <source file="/nebula/nebula/var//datastores/0/466/disk.1"/> <target dev="vdb" bus="virtio"/> <driver name="qemu" type="raw" cache="default"/> </disk> <graphics type="vnc" listen="0.0.0.0" port="-1"/> <interface type="network"> <source network="vnet0"/> <mac address="52:54:0a:b1:48:91"/> </interface> <interface type="network"> <source network="vnet1"/> <mac address="52:54:0a:b1:48:92"/> </interface> </devices> <features> <acpi/> </features> <devices><serial type="pty"><source path="/dev/pts/477"/><target port="0"/></serial><console type="pty" tty="/dev/pts/477"><source path="/dev/pts/477"/><target port="0"/></console></devices> </domain> Networks: cat /etc/libvirt/qemu/networks/vnet0.xml <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh net-edit vnet0 or other application using the libvirt API. --> <network> <name>vnet0</name> <uuid>1b6a3506-d9e0-4e1e-bbff-6f700b8dc80b</uuid> <forward mode='hostdev' managed='yes'> <pf dev='eth0'/> </forward> </network> cat /etc/libvirt/qemu/networks/vnet1.xml <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh net-edit vnet1 or other application using the libvirt API. --> <network> <name>vnet1</name> <uuid>11feb088-d609-4177-86d7-ac3b9467a3e8</uuid> <forward mode='hostdev' managed='yes'> <pf dev='eth1'/> </forward> </network> I wrote libvirt-users mailing list too. -- Pozdrawiam Dominik