+ u8 add_ip4, ip6_address_t * ip6_addr,
+ u8 add_ip6);
+void sctp_prepare_initack_chunk_for_collision (sctp_connection_t * sctp_conn,
+ u8 idx, vlib_buffer_t * b,
+ ip4_address_t * ip4_addr,
+ ip6_address_t * ip6_addr);
+void sctp_prepare_abort_for_collision (sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b,
+ ip4_address_t * ip4_addr,
+ ip6_address_t * ip6_addr);
+void sctp_prepare_operation_error (sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b, u8 err_cause);