+The packet ring supports one of two formats.
+The default format enqueues copies of the original packets into the rte_ring.
+If the ``RTE_PDUMP_FLAG_PCAPNG`` is set, the mbuf data is extended
+with header and trailer to match the format of Pcapng enhanced packet block.
+The enhanced packet block has meta-data such as the timestamp, port and queue
+the packet was captured on.
+It is up to the application consuming the packets from the ring
+to select the format desired.
+