I was disagreeing with your first paragraph. If the splitting is optional, as it would have to be now, and as I proposed it would not add complexity since it w

I was disagreeing with your first paragraph. If the splitting is optional, as it would have to be now, and as I proposed it would not add complexity since it would be opt in. Theoretically if it had split from the start, it may have added a minor amount of complexity to some programs, but not a significant amount. I don't get the need to add TCP states, as the TCP machine will not change, and the user space app shouldn't really be tracking/replicatting the TCP states. Anyway, your assumed (and mandatory) point of view was not obvious to me, I interpreted it from the position of "if that was done now". Which would add a trivial amount of logic to the kernel, mainly reusing existing logic, structures, and counters. So I guess we were slightly at cross purposes.