From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jarek Poplawski <jarkao2@o2.pl>
Subject: Re: adding data fields to netfilter_conntrack / conntrack events
Date: Wed, 23 Aug 2006 14:47:06 +0200
Message-ID: <echin1$ark$1@sea.gmane.org>
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On 23-08-2006 00:41, Stuart Zilm wrote:
> I'm trying to add some more data to that which gets passed across the 
> netlink socket for conntrack events, but can't seem to get the data from 
> the kernel to arrive in userspace.
> 
> I've added the following to net/ipv4/netfilter/ip_conntrack_netlink.c:
> 
> static inline int
> ctnetlink_dump_foo(struct sk_buff *skb, const struct ip_conntrack *ct)
> {
>     char dummy[sizeof(struct timeval)] = {0xde, 0xad, 0xde, 0xad, 0xde, 
> 0xad, 0xde, 0xad};
> 
>     NFA_PUT(skb, CTA_FOO, sizeof(struct timeval), dummy);
>     
>     return 0;
> 
> nfattr_failure:
>         printk("<6>ctnetlink_dump_foo: nfattr_failure\n");
>         return -1;
> }
> 
> // note that CTA_FOO = 13

I didn't check this but: did you see this change status 
function's processing with CTA_NAT_DST (13)?

Jarek P.