From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pablo Neira <pablo@eurodev.net>
Subject: Re: Developing with libipq
Date: Thu, 14 Oct 2004 20:10:32 +0200
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To: Jvalencia <tigrezno@log01.org>
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Jvalencia wrote:

>Hi all, i'm new to netfilter and just started trying some simple things.
>I've made a program (simple program) to take a packet and print its metadata.
>The output is this:
>
>ID of queued packet: 3413885640
>Netfilter mark value: 0
>Packet arrival time (seconds): 0
>Packet arrival time (+useconds): 0
>Netfilter hook we rode in on: 3
>  
>

You are enqueing packets in the localout hook.

#define NF_IP_LOCAL_OUT         3

>Name of incoming interface: 
>Name of outcoming interface: eth0
>Hardware protocol: 0
>Hardware type: 0
>Hardware address length: (null)
>Hardware address: 
>Length of packet data: 0
>
>
>Is this result valid? most values are 0
>  
>

yes, in localout hook the packets are in network layer, so they don't 
still know anything about the link layer information, that is, mac 
address and folks.

regards,
Pablo