More than you wanted to know about OS X networking
Article talks about some of the things going on under the surface of your Mac.
"Now we have played with lookupd and NetInfo, and probably you're
finding that DNS still doesn't work. So it's time to move on to configd. configd is the thing which takes notifications from
various parts of the system about configuration changes, and then fires off
notifications to things that want to know about this. For instance, battery
status events come from the kernel and get dispatched to things which put
up that annoying "you're now running on reserve power" dialog." Far more than you ever wanted to know about OS X networking
(Submitted by Noel Fri Nov 18, 2005 )
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