netdev - Questions regarding local address assignment

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Date:	Mon, 14 Apr 2008 11:19:56 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	netdev@...r.kernel.org
Subject: Questions regarding local address assignment

Suppose a program creates a socket and doesn't bind it to a local 
address.  When the program wants to connect the socket to a remote 
address (for TCP) or send a datagram to a remote address (for UDP or 
raw IP), the kernel automatically assigns a local address to it.

Questions:

	1. What algorithm does the kernel use to select the local 
	   address?

	2. Where is the source code for the selection?

	3. Is this information documented anywhere?

Thank you,

Alan Stern

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