I built a Hyper-v Guest on 2008R2. The guest machine shared the same network adatper with the phsical machine.
The network of the physical machine is below
IP 192.168.1.5/24 Gateway 192.168.1.1 DNS 192.168.1.2 There is an A recorder on DNS for test.com(192.168.1.3)
and the network of the guest machine is below IP 192.168.2.5/24 No Gateway DNS 192.168.2.2 There is an A recorder on DNS for test.com(192.168.2.3)
There stange things is When we ping test.com from the guest machine, we can get reply echo from 192.168.1.3 sometimes. And sometimes the reply is from 192.168.2.3 I am sure there is no route item for 192.168.1.x on the guest machine, and when we get the 192.168.2.3, we couldn't ping 192.168.1.3 two.