openstack@openstack1:~$ nova list
+--------------------------------------+------------+--------+----------------------------+
|                  ID                  |    Name    | Status |          Networks          |
+--------------------------------------+------------+--------+----------------------------+
| e6afbaed-8512-4fac-8d57-eef7ba5a4a65 | myInstance | ACTIVE | vmnet=10.0.0.4, 172.16.1.1 |
+--------------------------------------+------------+--------+----------------------------+
openstack@openstack1:~$ ping 172.16.1.1
PING 172.16.1.1 (172.16.1.1) 56(84) bytes of data.
From 172.16.1.1 icmp_seq=1 Destination Host Unreachable
From 172.16.1.1 icmp_seq=2 Destination Host Unreachable
From 172.16.1.1 icmp_seq=3 Destination Host Unreachable
^C
--- 172.16.1.1 ping statistics ---
6 packets transmitted, 0 received, +3 errors, 100% packet loss, time 5032ms
pipe 3
openstack@openstack1:~$ ping 10.0.0.4
PING 10.0.0.4 (10.0.0.4) 56(84) bytes of data.
^C
--- 10.0.0.4 ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1008ms