interesting work and (not cs graduate degree here) good output for MS thesis i'd say.

however it does seem to ignore other parallelism / userspace / packet processing efforts in other systems (freebsd netmap/negraph, netbsd bpfjit, the original BPF itself, etc) and 'confuse' layers of kernel vs userspace and pkt forwarding vs vpn - for example if userspace vs kernelspace networking stack is a 'solved' performance problem for custom applications, should not the focus be on comparing this toolkit with several kernel or kernel-bypassing mechanisms? that said, the comparison does seem 'complete' internally w/r/t the linux platform, so perhaps i should be less critical - esp since not everything can be done in a short time as for masters paper and this is more than I ever did:) . I suppose but given the amount of research and tools out there, some rationale as to the 'selection'/'combination' of presented aspects and a nod to these other areas as at least existing in the literature and having been considered in the topic i think would make this stronger.

still a good read and definately very well written/tested within the topic area, the instrumentation and using fast dynamic languages for prototyping and attempts to quantify vpn performance w/r/t packet processing & cpu i think is great from 'methods'/'theory' perspective.