Jaime,

This was answered quite some time ago (may be more than a year ago).
It is a security measure. When message is traveling from A to Z, A is
added to the destination list by B instead of by A so that A cannot fake
the message's origin or hide itself from the return route.

--Michael

On 11/4/2010 7:26 AM, Jaime Jimenez wrote:
Hi,
Very simple question. In RELOAD, why is the routing like this:

  A         B         X         Z
    -------------------------------

    ---------->
    Dest=Z
             ---------->
             Via=A
             Dest=Z
                       ---------->
                       Via=A, B
                       Dest=Z


                       <----------
                      Dest=X, B, A
             <----------
               Dest=B, A
    <----------
        Dest=A


And not like this?:


  A         B         X         Z
    -------------------------------

    ---------->
    Via=A

    Dest=Z
             ---------->
             Via=A, B
             Dest=Z
                       ---------->
                       Via=A, B, X
                       Dest=Z


                       <----------
                      Dest=X, B, A
             <----------
               Dest=B, A
    <----------
        Dest=A

Best Regards,
Jaime J.


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