OF10 plugin sending Stats Request type 13

Testing ODL with OF10 switches, I observe ODL always send Stats Request type 0x000d=13, however I do not find this type in OF10 specifications but in OF13:

/* Port description.

• The request body is empty.
• The reply body is an array of struct ofp_port. */
  OFPMP_PORT_DESC = 13,

BR/Luis