Modern Linux kernels (5.x and above) have the core infrastructure, but the specific kmod package ensures all dependencies are met for your specific distribution.
If hardware offloading is enabled via kmod-nft-offload , the kernel sends a message to the NIC's firmware. The hardware then creates a shortcut for that specific flow. kmod-nft-offload
kmod-nft-offload is not a "magic button" for every home PC. It is most effective in: Modern Linux kernels (5