From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4C758FD5.4020801@tiolive.com> Date: Wed, 25 Aug 2010 23:49:09 +0200 From: =?ISO-8859-1?Q?Fran=E7ois_Schmidts?= MIME-Version: 1.0 References: <4C752DD9.7040302@tiolive.com> <4C75724F.2000400@free.fr> <20100825133959.6b409cd8@nehalam> In-Reply-To: <20100825133959.6b409cd8@nehalam> Content-Type: text/plain; charset="iso-8859-1"; format="flowed" Content-Transfer-Encoding: quoted-printable Subject: Re: [Bridge] Number of addresses limitation Reply-To: francois@tiolive.com List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stephen Hemminger Cc: bridge@lists.linux-foundation.org On 25/08/2010 22:39, Stephen Hemminger wrote: > On Wed, 25 Aug 2010 21:43:11 +0200 > Nicolas de Peslo=FCan wrote: > >> Le 25/08/2010 16:51, Fran=E7ois Schmidts a =E9crit : >>> Hi, >>> >>> I'm using bridge-utils to add a bunch of tap interfaces to my computer >>> so I can run different qemu vm at the same time without using nat to >>> give them network access. It works fine. >>> >>> But at the same time I would like to add a lot of IPv6s addresses to the >>> bridge interface (br0). I find myself limitated to more or less 56 >>> addresses. If I add one more, one of the addresses already existing just >>> disappear from the br0 interface. >>> >>> Is there something I could do to remove or extent this limitation ? >> Did you try the same IPv6 configuration on a normal ethernet NIC ? Do yo= u think this is a bridge >> only related problem ? >> > Also what tools are you using? Don't use ifconfig (iputils) for IPv6; > only ip command (iproute2) works correctly with multiple addresses. I use something like "ip addr add ::number/64 dev br0" in a loop=20 to add quickly multiple addresses to the bridge. As far as I have tested it on classic interfaces like eth0, it works=20 fine and I can see my 200 addresses (if I added 200 of them) in the=20 output of ifconfig.