1、安装qemu

2、搭建网桥

sudo apt-get install bridge-utils

修改网络配置文件

vi /etc/network/interfaces

如果固定ip，添加

auto eth0 iface eth0 inet manual //记住一定要用manualauto br0 iface br0 inet static address 192.168.200.130 network 192.168.200.0 netmask 255.255.255.0 broadcast 192.168.200.255 gateway 192.168.200.1 dns-nameservers 8.8.8.8 bridge_ports eth0 bridge_stp off bridge_fd 0 bridge_maxwait 0

如果dhcp，添加

auto eth0 iface eth0 inet dhcp auto br0 iface br0 inet dhcp bridge_ports eth0 bridge_stp off bridge_fd 0bridge_maxwait 0

然后reboot查看是否生效，如下

如果还无法联网，判断路由是否正确，若不正确则添加网关，再次重启

ip route add default via 10.10.26.1 dev br0

3、配置脚本

vi /etc/qemu-ifup

#! /bin/shswitch=br0ifconfig $1 up brctl addif ${
   switch} $1

vi /etc/qemu-ifdown

#! /bin/shswitch=br0brctl delif ${
   switch} $1ifconfig $1 down

4、启动虚拟机

qemu-system-x86_64 -m 512 -cpu host -drive file=/home/bob/images/ubuntu1.qcow2 -enable-kvm -net nic,macaddr=00:00:00:00:00:01 -net tap,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown -vnc :0qemu-system-x86_64 -m 512 -cpu host -drive file=/home/bob/images/ubuntu2.qcow2 -enable-kvm -net nic,macaddr=00:00:00:00:00:02 -net tap,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown -vnc :1

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