(OK)(OK) QEMU-KVM —— HOST AND GUEST can ping each other

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OK HOST AND GUEST can ping each other
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HOST
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bridge=br0
brctl addbr ${bridge} ifconfig${bridge} 192.168.0.1 up

ifconfig ${bridge} down brctl delbr${bridge}

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GUEST
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virt-manager

网络源：指定共享设备名称
网络名称：br0
设备型号：virtio  or  rtl8139  or  e1000

ifconfig eth0 192.168.0.2 up

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then, can ping each other
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