Overlay fabric router

*** 300,309 ****
--- 300,310 ----
   * dynamic form may be necessary some day.
   */
  #define OVERLAY_TARGET_ITER_MAX 500
  
  #define OVERLAY_TARGET_CACHE_DROP       0x01
+ #define OVERLAY_TARGET_CACHE_ROUTER     0x02
  
  typedef struct overlay_targ_cache_entry {
          uint8_t                 otce_mac[ETHERADDRL];
          uint16_t                otce_flags;
          uint32_t                otce_dcid;