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Re: Adding of destination options in IPv6

To: Stefan Schlott <stefan.schlott@xxxxxxxxxxxxxxxxxx>
Subject: Re: Adding of destination options in IPv6
From: Andi Kleen <ak@xxxxxx>
Date: Tue, 11 Jul 2000 12:42:34 +0200
Cc: netdev@xxxxxxxxxxx
In-reply-to: <20000710225047.A838@xxxxxxxxxxxxxxxxxxxxxxxxxxx>; from Stefan Schlott on Mon, Jul 10, 2000 at 10:53:46PM +0200
References: <200007071235.QAA02612@xxxxxxxxxxxxx> <Pine.SOL.4.10.10007101628230.10709-100000@xxxxxxxxxxxxxxxxxxx> <20000710174922.57526@xxxxxxxxxxxx> <20000710225047.A838@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: owner-netdev@xxxxxxxxxxx
On Mon, Jul 10, 2000 at 10:53:46PM +0200, Stefan Schlott wrote:
> Hello,
> 
> > > I think that there is a need for such a mechanism. At least Mobile IPv6
> > > and probably also IPSec need to add destination options to all packets
> > > sent to certain addresses independently of the sockets. We have added
> > > hooks to our Mobile IPv6 module into ip6_output.c's ip6_xmit and
> > > ip6_build_xmit to add the options before fragmentation is done.
> > 2.4 has netfilterv6, so the right place for it is probably a netfilter
> > module.
> Please tell me that I am wrong, but afaik the netfilter hooks only return
> fragmented packets (nf6 hooks are called after fragmentation when sending,
> and before defragmentation when receiving a packet).

Correct, it occurs after fragmentation. 


-Andi


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