question: source address on interface w/ aliases?

[Julian Elischer]

On Thu, 12 Feb 2004, Brian Reichert wrote:

> I've had an expectation violated recently, and wanted to research
> whether my expectation was grounded in reality:
> 
>   Given an interface with a primary IP, and one or more aliased IP
>   addresses:
> 
>   When a process opens a connection to another host, which IP address
>   will be chosen as the source address?
> 
> Steven's just says 'the kernel chooses the IP address and port'.
> 
> My expectation was that the primary IP address would be used.


The primary IP address on the interface referred to in the routing table
entry that is chosen for the first packet..
(last time I looked)


> 
> Is my expectation valid?  Is there a spec that describes this, or
> is it up to an individual OS to do whatever it wants?
> 
> (I'm sorry to pester this list, as this question isn't actually
> specific to FreeBSD...)
> 
> I'm more than willing to do my own research, but a suggestion of
> useful buzzwords would be appreciated as well. :)
> 
> Thanks for your time...
> 
> -- 
> Brian Reichert				<reichert at numachi.com>
> 37 Crystal Ave. #303			Daytime number: (603) 434-6842
> Derry NH 03038-1713 USA			BSD admin/developer at large	
> _______________________________________________
> freebsd-net at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe at freebsd.org"
>