Re: [mpls-linux-devel] About mpls-packet to ip-packet process

[James R. L. <jl...@mi...>]

Hmm.  I think you are looking at the PHP code.  Take a look at
the 'deliver' instruction.  It will show you that packets destined from
IPv4 may be configured to go through 'ip_rcv' which will result in
the packet travesing all of the IPv4 netfilter hooks.

On Wed, Apr 30, 2008 at 03:56:51AM +0000, =?GB2312?B?wfXA2iA8b3JwaGVuX2xlaWxpdUBtc24uY29tPg==?= wrote:
> 
> Hi all:
> I found that the packet which from ip stack to mpls stack in the ip_finish_output2 had passed POSTROUTING hook in netfilter.
> BUT the packet from mpls stack to ip stack just use neighbour->output, which NOT hook in PREROUTING in netfilter.
> 
> In this way, if I do SNAT for ip packet and send into mpls stack, will NOT do Un-SNAT for the reply packet.
> 
> Is my understand right? How to solved it?
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-- 
James R. Leu
jl...@mi...