Those protocol discrimination and QoS concerns are possible results of "deep packet inspection" (how deep?) but just because these results are good does not mea

Those protocol discrimination and QoS concerns are possible results of "deep packet inspection" (how deep?) but just because these results are good does not mean we should accept DPI (~converse fallacy). The article outlines some of the problems with DPI but does not make a compelling case. See http://en.wikipedia.org/wiki/Deep_packet_inspection#Deep_Packet_Inspection_at_Internet_service_providers http://en.wikipedia.org/wiki/Deep_packet_inspection#Deep_Pac... for some uses of DPI at the ISP level. Each of these use cases has negative features. Those are "the problem with DPI".