ack numbers from reverse packets
highest number (most recent) SACK block
forward data segments on tcptrace graph
https://github.com/wireshark/wireshark/blob/master/ui/qt/utils/tango_colors.h
ack numbers from reverse packets
highest number (most recent) SACK block
forward data segments on tcptrace graph
https://github.com/wireshark/wireshark/blob/master/ui/qt/utils/tango_colors.h