From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vasily Averin Subject: Re: bride: IPv6 multicast snooping enhancements Date: Tue, 10 Feb 2015 16:59:09 +0300 Message-ID: <54DA0EAD.60002@parallels.com> References: <1378253619-23918-1-git-send-email-linus.luessing@web.de> <54D9C4ED.6040601@parallels.com> <20150210114428.GK2489@odroid> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Cc: Herbert Xu , netdev@vger.kernel.org, bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, "David S. Miller" , Cong Wang To: =?UTF-8?B?TGludXMgTMO8c3Npbmc=?= Return-path: In-Reply-To: <20150210114428.GK2489@odroid> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: bridge-bounces@lists.linux-foundation.org Errors-To: bridge-bounces@lists.linux-foundation.org List-Id: netdev.vger.kernel.org On 10.02.2015 14:44, Linus L=C3=BCssing wrote: > Hi Vasily, >=20 > On Tue, Feb 10, 2015 at 11:44:29AM +0300, Vasily Averin wrote: >> This patch prevent forwarding of ICMPv6 in bridges, >> so containers/VMs with virtual eth adapters connected in local bridge = cannot ping each other via ipv6 (but can do it via ipv4) >=20 > If a host wants to receive packets, then it needs to signalize > that via MLD. If your host does not do that, then it is expected > to not receive ICMPv6 echo requests to multicast addresses. An > exception is ff02::1, that should always work. Thank you for explanation, seems now I understand finally how it should w= ork. I'm trying to fix ICMPv6 processing broken in OpenVZ after rebase to last= RHEL6u6 kernel. After some unclear manipulation bridge begins to forward icmp6 NS (fe02::= 1) into wrong port, and at present I do not found the reason of this failure. Thank you, Vasily Averin