Context
Debian 64 bits custom kernels 3.14-3.16
Question
After reading a lot about port forwarding, I would like to know if nftable/iptables does zero-copy with splice(or something else) to route a packet to its destination in case the packet only matches a prerouting rule.
My assumption is "yes, of course, those guys surely have optimized such an important tool in the system"; but I am still asking.
Thanks
