All computers connected to networks have different IP addresses. This is how networks can verify where particular messages should go. In order to connect different computers, you need to access one ...

A friend and I were discussing if you are allowed to have two IP addresses on one NIC or not. I think it should be possible, since basically the NIC just sends and listens to packets related to either ...

One or both of them will drop the network connection in most cases (if they are well behaved). Otherwise, you'll simply won't be able to communicate with either in any reliable fashion. I have to ask.