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Old 24th May 2011
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nilsgecko nilsgecko is offline
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Join Date: Apr 2011
Location: Chicago, USA
Posts: 45
Default Re: TCP acknowledgments on loopback interface


In the "What's New" page for OpenBSD 4.9 it states:

TCP acknowledgments are no longer delayed on the loopback interface.
Could someone explain to me why TCP acknowledgements are acknowledged over the loopback? Is this inherent to all the BSD Network stacks? For example, in FreeBSD, the option log_in_vain=1 will show loopback connection attempts to itself. Or am I misunderstanding something? Regards
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