linux-kernel - Re: [2.6 patch] NF_CONNTRACK_H323 must depend on (IPV6 || IPV6=n)

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Message-ID: <20070129002108.GC6017@stusta.de>
Date:	Mon, 29 Jan 2007 01:21:08 +0100
From:	Adrian Bunk <bunk@...sta.de>
To:	David Miller <davem@...emloft.net>
Cc:	randy.dunlap@...cle.com, akpm@...l.org,
	linux-kernel@...r.kernel.org, netfilter@...ts.netfilter.org,
	netdev@...r.kernel.org, kaber@...sh.net
Subject: Re: [2.6 patch] NF_CONNTRACK_H323 must depend on (IPV6 || IPV6=n)

On Sun, Jan 28, 2007 at 04:04:42PM -0800, David Miller wrote:
> From: Adrian Bunk <bunk@...sta.de>
> Date: Mon, 29 Jan 2007 01:00:11 +0100
> 
> > On Sun, Jan 28, 2007 at 03:53:48PM -0800, David Miller wrote:
> > > Adrian is this the correct way to constrain the selection between
> > > "n" and "m" in this kind of situation?  I thought doing something
> > > like "depends on IPV6" is sufficient to achieve that?
> > 
> > "depends on IPV6" would fix the bug - but it would also make 
> > NF_CONNTRACK_H323 unavailable for all people without IPV6 support in 
> > their kernel.
> 
> Yes, that is an issue.
> 
> I guess with some slightly ugly ifdefs we could support the
> whole matrix of possibilities.  But perhaps that's undesirable
> for another reason.
>...

This depends on what NF_CONNTRACK_H323=y, IPV6=m is supposed to be:
- not allowed (NF_CONNTRACK_H323 must be modular) or
- NF_CONNTRACK_H323 can only be used for IPV4

My patch implements the first case.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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