#PACKMAN HEADER: IP LAYER 1
#name	offset	size	swap?(byte order)
hlen    0       4       0
ver	4	4	0
tos	8	8	0
totlen	16	16	1
id	32	16	1
frag	48	16	1
ttl	64	8	0
proto	72	8	0
cksum	80	16	1
saddr	96	32	1
daddr	128	32	1
