How to choose which Network interface to use?

Question

I use Qt for my TCP communication. If my PC has 2 network interfaces (say eth0, eth1), and say I want to explicitly use eth1, how do I do that in Qt?

Answer 1

That's not a Qt question, that's a socket question. Bind() to the address on eth1. You have to hope that the routing table will actually do what you expect when you do that.