嗯，虽然使用Debian做路由好长一段时间，但没有个界面始终是不太方便，这虽然在使用电脑时没什么问题，但在平板上输入命令真的是痛苦，于是乎还是用OpenWRT吧，反正还是在Linux圈圈里打转转。

由于没有硬路由，干脆KVM吧，下载系统镜像https://downloads.openwrt.org/releases/19.07.4/targets/x86/64/openwrt-19.07.4-x86-64-combined-ext4.img.gz

转换为qcow2文件: 

qemu-img convert -f raw openwrt-19.07.4-x86-64-combined-ext4.img -O qcow2 openwrt.qcow2

另外虚拟硬盘的空间小了点，加！ 

qemu-img resize t.qcow2 +1G

好了，创建虚拟机。

<domain type='kvm'>  <name>OpenWRT</name>  <uuid>590d9131-9951-4282-9e81-24bd7e5a1fac</uuid>  <memory unit='KiB'>1048576</memory>  <currentMemory unit='KiB'>1048576</currentMemory>  <vcpu placement='static'>1</vcpu>  <os>    <type arch='x86_64' machine='pc-i440fx-2.6'>hvm</type>    <boot dev='hd'/>  </os>  <features>    <acpi/>    <apic/>    <pae/>  </features>  <clock offset='utc'/>  <on_poweroff>destroy</on_poweroff>  <on_reboot>restart</on_reboot>  <on_crash>restart</on_crash>  <devices>    <emulator>/usr/bin/qemu-system-x86_64</emulator>    <disk type='file' device='disk'>      <driver name='qemu' type='qcow2'/>      <source file='/home/jeff/openwrt/openwrt.qcow2'/>      <target dev='hda' bus='ide'/>      <address type='drive' controller='0' bus='0' target='0' unit='0'/>    </disk>    <controller type='usb' index='0' model='piix3-uhci'>      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>    </controller>    <controller type='pci' index='0' model='pci-root'/>    <controller type='pci' index='1' model='pci-bridge'>      <model name='pci-bridge'/>      <target chassisNr='1'/>      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>    </controller>    <controller type='pci' index='2' model='pci-bridge'>      <model name='pci-bridge'/>      <target chassisNr='2'/>      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>    </controller>    <controller type='ide' index='0'>      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>    </controller>    <interface type='bridge'>      <mac address='52:54:00:78:f9:59'/>      <source bridge='lan'/>      <model type='virtio'/>      <address type='pci' domain='0x0000' bus='0x01' slot='0x01' function='0x0'/>    </interface>    <interface type='bridge'>      <mac address='52:54:00:78:f9:60'/>      <source bridge='wan'/>      <model type='virtio'/>      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/>    </interface>    <input type='mouse' bus='ps2'/>    <input type='keyboard' bus='ps2'/>    <graphics type='vnc' port='5901' autoport='no' listen='0.0.0.0'>      <listen type='address' address='0.0.0.0'/>    </graphics>    <video>      <model type='cirrus' vram='16384' heads='1' primary='yes'/>      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>    </video>    <memballoon model='virtio'>      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>    </memballoon>  </devices></domain>

启动完成！