-ip_udp_encap_two (vlib_main_t * vm, vlib_buffer_t * b0, vlib_buffer_t * b1,
- u8 * ec0, u8 * ec1, word ec_len, u8 is_v4)
+ip_udp_encap_two (vlib_main_t *vm, vlib_buffer_t *b0, vlib_buffer_t *b1,
+ u8 *ec0, u8 *ec1, word ec_len,
+ ip_address_family_t encap_family,
+ ip_address_family_t payload_family)