From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4BF64C67.5070206@si.ct.upc.edu> Date: Fri, 21 May 2010 11:03:35 +0200 From: frank MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1"; format="flowed" Content-Transfer-Encoding: quoted-printable Subject: [Bridge] MAC address in bridge device List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: bridge@lists.linux-foundation.org Hi all, we have a couple of Red Hat 5 servers with OpenVZ with some virtual=20 machines (VEs). This virtual machines have veths (virtual ethernet=20 devices), and this devices are attached to a bridge device with main=20 node ethernet. # brctl show vzbr2 8000.001851cfe1c3 no veth130.0 eth0 The bridge device also has an IP because we need to reach host with an=20 IP in this subnet. We have noticed a problem: When we boot the main host, the bridge takes the IP we have defined to=20 it and the MAC af the eth0 device. That's ok. But when a veth is joined to the bridge device, this one takes the MAC=20 of the veth device, so MAC bridge device changes; of course this cause=20 different kind of network problems because all hosts which were=20 connected still has the old MAC in its arp table. We have revised a lot of things, but we don't find any explanation. Does=20 anybody know a possible cause of this behaviour? Where can we look to get more information? Is the bridge working as=20 expected? Thanks in advance for your help. Regards. Frank UPC - Terrassa (Barcelona) --=20 Aquest missatge ha estat analitzat per MailScanner a la cerca de virus i d'altres continguts perillosos, i es considera que est=E0 net.