Currently nftables support is 'very alpha' version.
Only support NAT/Filter add and del.

How to install:
 + Run 'make' command with 'Makefile.linux_nft',
   i.e. > make -f Makefile.linux_nft

Prerequisites:
 + Please run 'netfilter_nft/scripts/nft_init.sh'
   i.e. > sudo ./netfilter_nft/scripts/nft_init.sh