uint32_t vtc_flow; /**< IP version, traffic class & flow label. */
uint16_t payload_len; /**< IP packet length - includes sizeof(ip_header). */
uint8_t proto; /**< Protocol, next header. */
uint32_t vtc_flow; /**< IP version, traffic class & flow label. */
uint16_t payload_len; /**< IP packet length - includes sizeof(ip_header). */
uint8_t proto; /**< Protocol, next header. */