Have a multi-ip interface. How to select one of them to establish an outgoing connection?

Question

I am working with with an interface with multiple assigned IP addresses. I need establish a connection from this interface to a remote listening SCTP socket (not in multi-homing mode).

How is it possible to select the desired interface's IP as the source of the connection? What flag/socket-option should be used?

score 4 · Accepted Answer · answered Jan 26 '11 at 13:58

4

You can use the bind() function to set the local IP address.

answered Jan 26 '11 at 13:58

Simon Richter

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Ok,dumb question for a dumb socket programmer :) – Umberto Jan 26 '11 at 14:11
Just specify port `0` when you call `bind()` to let the kernel still choose the source port. – eater Jan 26 '11 at 14:16

Have a multi-ip interface. How to select one of them to establish an outgoing connection?

1 Answers1