Actions:
1. destroy eth0
# virsh iface-destroy eth0
2. check the state of eth0
# virsh iface-list --all
3. check if the network is good.
# ping google.com
# ping 10.66.70.* (select a machine in subnet 10.66.70.0/24)
4. start eth0
# virsh start eth0
5. check the state of eth0
# virsh iface-list --all
6. if eth0 is configured using "dhcp" protocol, check if the network is good
# ping google.com
# ping 10.66.70.* (select a machine in subnet 10.66.70.0/24)
7. loop upper steps with passing MAC address but not the interface name to "iface-destoy", and "iface-start"
8. loop uuper steps on all other physical network interfaces, skip step 3 and step 6 on loopback device.
Expected Results:
Step 2:
eth0 will be inactive
Step 3:
network is not good
Step 5:
eth0 will be active
Step 6:
network will be good.