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From: Chris Hills <chaz@chaz6.com>
To: netfilter@vger.kernel.org
Subject: Re: Problem with IPv6 tunnel
Date: Sun, 21 Jun 2009 15:44:37 +0200	[thread overview]
Message-ID: <h1ldg5$o38$1@ger.gmane.org> (raw)
In-Reply-To: <200906191218.03217.ben@differentialschokolade.org>

On 19/06/09 12:18, Benedikt Gollatz wrote:
>> I am not an iptables expert, but to me it seems the first MASQUERADE
>> rule matches all packets and the new one does not make any difference.
>> Can someone confirm that ?
>
> That's absolutely true. The rule from the FAQ is meant to replace your
> original rule, exempting proto-41 traffic from masquerading and thus
> connection tracking.

I believe the idea is that if you are terminating the tunnel on your 
router, then this rule should replace your default MASQUERADE rule so 
instead of

MASQUERADE  all  --  anywhere             anywhere
MASQUERADE !ipv6 --  anywhere             anywhere

you should have just:-

MASQUERADE !ipv6 --  anywhere             anywhere

This way the connection is not tracked unnecessarily.

Regards,

Chris Hills


  parent reply	other threads:[~2009-06-21 13:44 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-19  8:31 Problem with IPv6 tunnel David Balažic
2009-06-19 10:18 ` Benedikt Gollatz
2009-06-19 12:03   ` David Balažic
2009-06-19 12:13     ` Benedikt Gollatz
2009-06-19 12:57       ` David Balažic
2009-06-19 13:08         ` Benedikt Gollatz
2009-06-19 13:37           ` David Balažic
2009-06-21 13:44   ` Chris Hills [this message]
2009-06-21 13:46     ` Chris Hills
2009-07-09 15:30   ` Pascal Hambourg
2009-06-19 10:18 ` Benedikt Gollatz
2009-07-09 11:48 ` David Balažic
2009-07-09 13:06   ` David Balažic
2009-07-09 14:51     ` Benedikt Gollatz
2009-07-09 15:34       ` Pascal Hambourg
2009-07-10 11:50         ` Benedikt Gollatz
2009-07-10 13:40           ` Pascal Hambourg
2009-07-10 15:00             ` David Balažic
2009-07-10 15:30               ` Pascal Hambourg
2009-07-10 22:31                 ` David Balažic

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