-d is debug
-y shifts the window line in tcptrace (yellow) to the highest received acknowledgment. Normally this line is just a constant amount more than the ack number(i.e. useless).
-g shifts the ack line in tcptrace (green) to the highest received acknowledgment. Normally this line is the standard TCP ack number, which, for DCCP, translates to the highest contiguous acknowledgement in the ack vector.
-d is debug
-y shifts the window line in tcptrace (yellow) to the highest received acknowledgment. Normally this line is just a constant amount more than the ack number(i.e. useless).
-g shifts the ack line in tcptrace (green) to the highest received acknowledgment. Normally this line is the standard TCP ack number, which, for DCCP, translates to the highest contiguous acknowledgement in the ack vector.