title: issue with tcp reassembly
body: <p>I am getting packet segments in two parts.I am able to see it in wireshark as tcp reassembled.After searching on google i found out about dont fragment bit set for fragmented data.but it is not set even for fragmented data.i am using java jnetpcap library to get the packets but i am not able figure out on what fields and flags should i wait for to reassemble the tcp packet.some times the packet is coming at once if i run on VM but some times its fragmented.i need a way to figure out reassembling the packet.</p>