#PACKMAN HEADER: TCP LAYER 2
#name	offset	size	swap?(byte order)
sport	0	16	1
dport	16	16	1
seqnum	32	32	1
acknum	64	32	1
unused1	96	4	0
hlen	100	4	0
flags	104	6	0
unused2 110     2       0
win	112	16	1
cksum	128	16	1
urgp	144	16	1
