Trying to get a Subnet NATted

["Kevin L. Collins" <kcollins@xxxxxx>]

I've got a strange situation where I receive data from my WAN links
across the same Interface as my External Interface.

Let me try to explain it with ACSII art....
+--------------+
|     WAN      |
|10.200.9.x/24 |
|10.200.10.x/24|
+------+-------+
       |
       |