Hello, for my application, I need my rMBP 15" to connect to the network via ethernet. At the same time, I also need to connect it to an embedded device running linux via "direct" ethernet connection. Is there a way to add one more ethernet port to the rMBP? I noticed that there are two Thunderbolt ports on my laptop. One is connected to the ethernet via a Thunderbolt to Gigabit Ethernet Adapter. The other one is unused. Do you think adding another Thunderbolt to Gigabit Ethernet Adapter will work well? What other options do I have? I tried to a switching hub but it does not work. Thanks.