netdev - Re: [RFC PATCH net-next 0/7 v2]IPv6:netfilter: defragment

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Date:	Thu, 25 Mar 2010 11:20:20 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>
CC:	Shan Wei <shanwei@...fujitsu.com>,
	Pascal Hambourg <pascal.mail@...uf.fr.eu.org>,
	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>,
	David Miller <davem@...emloft.net>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Yasuyuki KOZAKAI <yasuyuki.kozakai@...hiba.co.jp>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	netfilter-devel@...r.kernel.org
Subject: Re: [RFC PATCH net-next 0/7 v2]IPv6:netfilter: defragment

Jozsef Kadlecsik wrote:
> Why the order of the raw table and defragmentation is reversed for IPv6?
> 
> That makes impossible to use the NOTRACK target in IPv6: for example if 
> someone enters
> 
> ip6tables -t raw -A PREROUTING -p tcp --dport 80 -j NOTRACK
> 
> and if we receive fragmented packets then the first fragment will be 
> untracked and thus skip nf_ct_frag6_gather (and conntrack), while all 
> subsequent fragments enter nf_ct_frag6_gather and reassembly will never 
> successfully be finished.
> 
> IMHO this is a bug and should be fixed. Patrick, please consider applying 
> the patch below.

Indeed. I've applied your patch with a minor fixup (attached) to
apply cleanly to the current tree, thanks.


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