IPv6 raw socket to send original udp

[Hideki Yamamoto]

Hi, 

One of my collegues helped me.
bpf described in the following page is useful.

http://canmore.sdf-eu.org/freebsd/bpf.html

And libdnet is a wrapper of the bpf on FreeBSD.
Code using libdnet seems to be portable with Linux and so on.


From: Hideki Yamamoto <yamamoto436 at oki.com>
Subject: IPv6 raw socket to send original udp
Date: Mon, 08 May 2006 05:44:51 +0900 (JST)
Message-ID: <20060508.054451.41688849.yamamoto436 at oki.com>

> 
> Hi,
> 
> I tried to use pf as a traffic shaper for a streaming server, but
> it does not work well.  Input of pf is bursted packets within around 20
> msec, but is not bursted packets within around 100 msec or longer.
> This traffic pattern is the feature of the streaming server.
> 
> As pf is does not work well, I am thinking designinig original shaper
> command on bridge-like freebsd box, and that the command will receive
> the sever packet via libpcap, shape it and then send it constantly to
> another device.  To send packet from bridge-like freebsd box, I plan
> to use RAW IPV6 socket.  However in my small experiment, it does not
> seems good, IP_HDRINCL option does not woks.
> 
> I wonder if IPv6 raw socket can be used only for ICMPv6.
> I would like to use IPv6 raw socket for original udp packet.
> 
> Thanks in advance.
> 
> Hideki Yamamoto
> --
> 
> 
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