From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Rossi Subject: Re: SNAT multicast traffic Date: Tue, 08 Feb 2005 14:52:05 +0100 Message-ID: <4208C405.9020907@inwind.it> References: <420882B9.3050108@inwind.it> <20050208144638.GQ6878@sunbeam.de.gnumonks.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netfilter-devel@lists.netfilter.org To: Harald Welte In-Reply-To: <20050208144638.GQ6878@sunbeam.de.gnumonks.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: netfilter-devel-bounces@lists.netfilter.org Errors-To: netfilter-devel-bounces@lists.netfilter.org List-Id: netfilter-devel.vger.kernel.org Harald Welte wrote: >On Tue, Feb 08, 2005 at 10:13:29AM +0100, Paolo Rossi wrote: > > >>Hi all, >> >> >>I have a trouble with netfilter. I need to perform a SNAT to outgoing >>multicast packet. Multicast packet come from private network and i can't >>annunce this private network in my routing domain. Becauseour routers >>manage multicast traffic with PIM-SM protocol and PIM perform RPF (reverse >>path forwarding), the clients can't see the multicast traffic. I've read >>that netfilter don't support multicast SNAT, why? >> >> > >netfilter/iptables doesn't implement multicast NAT at all. this is due >to it's strictly stateful fully-symmetric implementation, which >obviously doesn't fit the multicast paradigm (where 'reply' packets of a >multicast 'connection' don't have the inverted >sourceip<->destinationip). > > > Thank you very much Harald. Is it possible to perform stateless nat in Linux ?