MT7621(CPUの負荷はvmstatで確認)
・offloadなし
659 Mbits/sec sender/receiver
us sy id wa st
0 42 58 0 0

・software flow offload
913 Mbits/sec sender/receiver
us sy id wa st
0 42 58 0 0

・hardware flow offload(HW NAT)
925 Mbits/sec sender/receiver
us sy id wa st
0 0 100 0 0