From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754938Ab1BVSHs (ORCPT ); Tue, 22 Feb 2011 13:07:48 -0500 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:44203 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754912Ab1BVSHr convert rfc822-to-8bit (ORCPT ); Tue, 22 Feb 2011 13:07:47 -0500 Date: Tue, 22 Feb 2011 10:08:23 -0800 (PST) Message-Id: <20110222.100823.189696335.davem@davemloft.net> To: linus.luessing@web.de Cc: shemminger@linux-foundation.org, bridge@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, herbert@gondor.hengli.com.au, yoshfuji@linux-ipv6.org Subject: Re: [PATCH 2/2] bridge: Use IPv6 link-local address for multicast listener queries From: David Miller In-Reply-To: <1297966672-3457-3-git-send-email-linus.luessing@web.de> References: <20110215154128.2a28632c@nehalam> <1297966672-3457-3-git-send-email-linus.luessing@web.de> X-Mailer: Mew version 6.3 on Emacs 23.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Linus Lüssing Date: Thu, 17 Feb 2011 19:17:52 +0100 > Currently the bridge multicast snooping feature periodically issues > IPv6 general multicast listener queries to sense the absence of a > listener. > > For this, it uses :: as its source address - however RFC 2710 requires: > "To be valid, the Query message MUST come from a link-local IPv6 Source > Address". Current Linux kernel versions seem to follow this requirement > and ignore our bogus MLD queries. > > With this commit a link local address from the bridge interface is being > used to issue the MLD query, resulting in other Linux devices which are > multicast listeners in the network to respond with a MLD response (which > was not the case before). > > Signed-off-by: Linus Lüssing Applied. From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH 2/2] bridge: Use IPv6 link-local address for multicast listener queries Date: Tue, 22 Feb 2011 10:08:23 -0800 (PST) Message-ID: <20110222.100823.189696335.davem@davemloft.net> References: <20110215154128.2a28632c@nehalam> <1297966672-3457-3-git-send-email-linus.luessing@web.de> Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: shemminger@linux-foundation.org, bridge@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, herbert@gondor.apana.org.au, yoshfuji@linux-ipv6.org To: linus.luessing@web.de Return-path: In-Reply-To: <1297966672-3457-3-git-send-email-linus.luessing@web.de> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org =46rom: Linus L=FCssing Date: Thu, 17 Feb 2011 19:17:52 +0100 > Currently the bridge multicast snooping feature periodically issues > IPv6 general multicast listener queries to sense the absence of a > listener. >=20 > For this, it uses :: as its source address - however RFC 2710 require= s: > "To be valid, the Query message MUST come from a link-local IPv6 Sour= ce > Address". Current Linux kernel versions seem to follow this requireme= nt > and ignore our bogus MLD queries. >=20 > With this commit a link local address from the bridge interface is be= ing > used to issue the MLD query, resulting in other Linux devices which a= re > multicast listeners in the network to respond with a MLD response (wh= ich > was not the case before). >=20 > Signed-off-by: Linus L=FCssing Applied. From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 22 Feb 2011 10:08:23 -0800 (PST) Message-Id: <20110222.100823.189696335.davem@davemloft.net> From: David Miller In-Reply-To: <1297966672-3457-3-git-send-email-linus.luessing@web.de> References: <20110215154128.2a28632c@nehalam> <1297966672-3457-3-git-send-email-linus.luessing@web.de> Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Subject: Re: [Bridge] [PATCH 2/2] bridge: Use IPv6 link-local address for multicast listener queries List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: linus.luessing@web.de Cc: yoshfuji@linux-ipv6.org, netdev@vger.kernel.org, bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, herbert@gondor.hengli.com.au From: Linus L=FCssing Date: Thu, 17 Feb 2011 19:17:52 +0100 > Currently the bridge multicast snooping feature periodically issues > IPv6 general multicast listener queries to sense the absence of a > listener. > = > For this, it uses :: as its source address - however RFC 2710 require= s: > "To be valid, the Query message MUST come from a link-local IPv6 Sour= ce > Address". Current Linux kernel versions seem to follow this requireme= nt > and ignore our bogus MLD queries. > = > With this commit a link local address from the bridge interface is be= ing > used to issue the MLD query, resulting in other Linux devices which a= re > multicast listeners in the network to respond with a MLD response (wh= ich > was not the case before). > = > Signed-off-by: Linus L=FCssing Applied.