Re: [nfqueue] verdict NF_ACCEPT doesn't continue

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On Wednesday 2011-11-30 16:48, U.Mutlu wrote:

> Jan Engelhardt wrote, On 2011-11-30 11:09:
>> On Wednesday 2011-11-30 09:53, U.Mutlu wrote:
>>
>>> Eric Leblond wrote, On 2011-11-30 09:07:
>>>> Hello,
>>>>
>>>> Le mercredi 30 novembre 2011 à 08:58 +0100, U.Mutlu a écrit :
>>>>> nfq_set_verdict() or nfq_set_verdict2():
>>>>>    NF_DROP    discard the packet
>>>>>    NF_ACCEPT  the packet passes, continue iterations
>>>>>
>>>>> In my callback I pass NF_ACCEPT to let the packet continue its travel
>>>>> through the subsequent rules (normal iptables rules).
>>>>
>>>> When NF_ACCEPT is issued, the packet is accepted for the current table.
>>>> It will then only be checked by rules in other tables.
>>>
>>> I need to just inspect the hdrs and then let it continue its usual way.
>>> What is needed to realize this functionality?
>>
>> Figuring out a way what to do with the packet if the ruleset changes
>> while the packet is out in userspace for an indefinite time.
>
> Sorry, Jan, I don't get it. Why do you say the ruleset changes, it 
>doesn't IMO.

But it _could_ change while the packet is away. And that is the case you 
have to protect against, somehow.
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