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Question on IP

  1. Feb 5, 2010 #1
    hey everyone,

    so I know that or localhost just loops back to your local machine. However, I don't understand what occurs on the packet level when you actually type in 'localhost' or '' One of my co-workers speculated that each computer has some sort of internal name-resolver program that, when a user types in those special strings, is automatically called & just re-directs back to the local computer. Does this sound valid?

    Does anyone know what exactly happens on the packet level?


  2. jcsd
  3. Feb 5, 2010 #2


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    Science Advisor
    Homework Helper

    Yep, that's pretty much it. Anything outside your computer that somehow gets a loopback address will just drop it anyway, so your computer has to handle it. This is what you want, of course, since it's much faster than a real network connection.
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