Hi I trying to create an application to manage virtual machines using libvirt library. Currently i am focusing with KVM hypervisor and bridge networking. I face two issues which i cant find a solution.... First issue: When i tried to reboot a virtual machine (using virDomain's reboot fn). I got exception message that there was no support in the hypervisor for reboot. is it true that we cant reboot a KVM based VM? Second issue: When i tried to setup a bridge network for KVM based VM. I got error message like this .. "QEMU quit during console startup bind() failed" I have listed below my steps which i tried setup bridge network. On Dom0 =========== <<<< brctl addbr br0 ifconfig eth0 0.0.0.0 brctl addif br0 eth0 ifconfig br0 192.168.1.82 netmask 255.255.255.0 up route add -net 192.168.1.0 netmask 255.255.255.0 br0 route add default gw 192.168.1.1 br0 <<<< ** dom0 IP 192.168.1.82 after that i checked the network connection of the Dom0.. it was fine. ifconfig was fine. then i created tun/tap device like given in the following link http://wiki.centos.org/HowTos/KVM#head-c02a0b33e7949b0bc3b151ac6e0bdfb91b6bb... <<<<< sudo tunctl -b -u john sudo ifconfig tap1 up sudo brctl addif br0 tap1 export SDL_VIDEO_X11_DGAMOUSE=0 sudo iptables -I INPUT -i br0 -j ACCEPT <<<<< then i started to define vm like this... <domain type="kvm"> <name>test82</name> <uuid>e5520db4-ad8a-38c3-b9d9-4e3c7a1052dc</uuid> <memory>131072</memory> <vcpu>1</vcpu> <on_poweroff>destroy</on_poweroff> <os><type arch="i686">hvm</type> <boot dev="hd"/> </os> <clock sync="localtime"/> <features> <pae/> <acpi/> <apic/> </features> <devices> <emulator>/usr/bin/qemu-kvm</emulator> <disk type="file" device="disk"> <source file="/dev/FluidVM_grp/Windows_NT_2003_121560222596"/> <target dev="hda"/> </disk> <interface type="bridge"> <source bridge="br0"/> </interface> <interface type="bridge"> <source bridge="br0"/> <target dev="tap1"/> <mac address="00:16:3e:8f:ca:4b" /> </interface> <graphics type="vnc" port="5900" listen="0.0.0.0"/> </devices> </domain> is anything i am missing in setting up the bridge network? Thanks and Regards, -- Shan