ike_pl_print
static void ike_pl_print(u_int8_t, u_int8_t *, u_int8_t);
ike_pl_print(next_payload, payload, ISAKMP_DOI);
ike_pl_print (PAYLOAD_PROPOSAL, buf +
ike_pl_print(PAYLOAD_TRANSFORM, pp->spi + pp->spi_size, doi);
ike_pl_print(next_type, buf + this_len, doi);