On 14.01.2009, at 07:38, Andreas Raab wrote:
Hi Folks -
I have a quick question about the expected behavior of the Unix VM when running on a machine with multiple IP addresses. We have a box with two interfaces (eth0 and eth1 respectively) and only eth0 was originally enabled. Listening without specifying an interface worked fine for clients connecting to the (static) IP configured for eth0.
Then, we enabled eth1 and gave it its own (static) IP address. We had two images running, one without specifying the interface, one specifying the IP for eth1 (both images had been restarted after the change was made). The result was that clients could connect to the image running on eth1 but not to the one running on eth0. Only when we changed that image to use the explicit IP address configured for eth0 everything worked as expected (i.e., clients could connect to either IP address).
Question: Is this the expected behavior? I'm not sure if not specifying the interface implies that the VM accepts connections on all interfaces, or only the first one, the last one, a random one or not at all. Any insights are greatly appreciated - we have a working setup but it would be nice to know whether this is what we should expect to see or not.
Well, I would expect it to listen on all interfaces.
What does netstat say (or lsof)?
- Bert -