In your previous mail you wrote:

   > That's what I was aiming for; a short and simple advanced api socket
   > extension doc as a guideline for MIPv6 compatible applications.
   
   The default address selection draft contemplates about such an API:
   
      Implementations should provide a mechanism allowing an application
      to reverse the sense of this preference and prefer care-of addresses
      over home addresses (e.g., via appropriate API extensions). Use of
      the mechanism should only affect the selection rules for the
      invoking application.
   
=> this suggests a setsockopt() API which is not usable.
What I suggest is:
 - a better solution for address selection exceptions
 - a get_the_care-of_which_shall_be_used for very special applications
   (which need this information to explicitely bind sources)

   I think we should work on a separate Mobile IP API, that can encompass
   this and more.
   
=> no, only the second item should be in the Mobile IP API. The first one
has to go in an address selection control API.

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