An ACL packet, which can interrupt the regular flow of SCO data.
为一acl数据包，可中断正常的SCO数据流。
2
TCP controls the flow of data based on packet acknowledgements from the peer endpoint.
TCP基于数据包确认从对等端点控制数据流。
3
A newer tool called tcpflow complements tcpdump and provides a way to do protocol flow analysis and to properly reconstruct data streams, regardless of packet order or retransmissions.