sif=eth0
lif=eth1
src=10.0.0.1
dst=10.0.0.2
gw=192.168.137.100
fake_src=192.168.137.179
fake_dst=192.168.200.2
dmac=00:50:56:40:00:63
guess=24:35:36:37:01:02:02:04
block=e3:ff:5b:e0:f4:f7:c4:ef
oiv=f0:67:c7:0e:ca:97:af:61
spi=0xd3ac19a6