>> I understand that's what userspace does.  What about in the datapath?
>> Do the datapaths properly handle it if userspace adds a flow that does
>> "truncate, pop_vlan, ..., output"?  The kernel datapath, in particular,
>> should be able to handle malicious or buggy userspace.
>>
>
> There is check in truncate action at flow install. we can check the
> same at output.

Thanks, I will add this check at output.
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