Re: IP header mangling

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On Thursday 2010-12-23 23:38, doug arro wrote:

>Hello,
>
>I am looking at writing a new xtables extension to add/drop IP Option 
>headers for outgoing packets.  Is the mangle table and the prerouting 
>chain the best places for this task?  Is there an existing module doing 
>similar things that I can model after?  I noticed this so-called 
>IPV4OPTSSTRIP patch.  Is there a similar kernel module that allows 
>adding an Option header to the IP packet?

http://svn.ninux.org/ninuxdeveloping/browser/xtables-addons/extensions
has an SR module that seems to do that for a specific option (SR) and 
then routing it. I guess you can reuse parts of it.
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