src host 102.50.50.1 => offload bind 0
dst host 167.32.1.3 => !offload
host 68.3.127.238 or 68.3.127.239 => offload bind 7 !ddp class 1
dst net 168.192/16 or 121.101.2/24 => offload class 2
src host 102.60.60.3 and dst net 10.10/16 => !offload
dst port 22 or 23 => offload bind 3
dst port http and dst net 10.4/16 => offload class 4 bind 6
src and dst port 80 => not offload
vers 6 => !offload
src port & 0xfc00 == 0 and listen => offload
dst port nfs && dscp != 0 && popen=> offload class 3 !!!ddp