Re: [PATCH 8/9] netfilter: xtables: inclusion of xt_TEE

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Jan Engelhardt wrote:
> On Tuesday 2010-03-23 13:38, Patrick McHardy wrote:
>>> 1. sending the clone through a tunnel - admin can't do much about MTU getting
>>> smaller here.
>> It either happens locally (before encapsulation) or for the
>> encapsulated packets, which isn't a problem.
> 
> That is what I am referring to. Suppose -j TEE is using
> a --gateway address whose route resolves to
> 
> default dev ipip0 [mtu 1480]
> 
> (There is no encapsulation or MTU decrease on the original path.) The
> admin then has two possibilities, to either drop the clone, or coerce
> the source in sending appropriately-sized packets.

True. He might also hack ipip to allow fragmentation of encapsulated
packets independant of the IP_DF flag of the original packet.

But in my opinion he should make sure not to send anything to the
source for duplicated packets.

BTW, I just noticed TEE is still using init_net. This should be
fixed.

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