dlg writes: > should we just do it unconditionally? is there a downside to that?
That is a very good question. What are the downsides against having the driver do this filtering itself, like all real hardware does? Why risk sending packets of the wrong form further upwards into the network stack, and then having to ensure the checks exist up there? This flag is requesting special service to encourage a layer violation. What is the reasoning to encourage such a flag (which someone will one day see, misuse, and try to expand for their bizzare use case...)
