1、查看原有网卡信息
#virsh domiflist snale Interface Type Source Model MAC ------------------------------------------------------- vnet0 bridge br0 virtio 52:54:00:8c:b8:60
2、临时添加新网卡
#virsh attach-interface snale --type bridge --source br0 成功附加接口
永久添加网卡命令
#virsh attach-interface snale --type bridge --source br0 --config
3、查看
#virsh domiflist snale Interface Type Source Model MAC ------------------------------------------------------- vnet0 bridge br0 virtio 52:54:00:8c:b8:60 vnet1 bridge br0 - 52:54:00:14:86:cf #ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 52:54:00:8c:b8:60 brd ff:ff:ff:ff:ff:ff inet 192.168.0.23/24 brd 192.168.0.255 scope global eth0 inet6 fe80::5054:ff:fe8c:b860/64 scope link valid_lft forever preferred_lft forever 3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000 link/ether 52:54:00:14:86:cf brd ff:ff:ff:ff:ff:ff
4、命令行增加的网卡只保存在内存中，重启就失效，所以需要保存到配置文件中
#virsh dumpxml snale >/etc/libvirt/qemu/snale.xml
#virsh define /etc/libvirt/qemu/snale.xml
删除网卡命令
#virsh detach-interface snale --type bridge --mac 52:54:00:14:86:cf 成功分离接口
再重新保存配置