>> >>   This would still have some problems since certain extension headers
>> >>   (fragmentation, AH, ESP) aren't passed up to the application.
>> >=> exactly my second concern.
>>      one question - maybe i have lost some context.
>>      we are talking about socket API.  is it really necessary
>>      for user applications to be able to transmit arbitrary AH/ESP/fragment
>>      header?

        also i should note that, if you need to transmit arbitrary packet
        to the wire, there are other ways like BPF writes.

itojun
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