I'm having similar issues, and in my case it is the intel igb driver. I have the following setup:
========== # brctl show bridge name bridge id STP enabled interfaces br0 8000.0025906bde00 no bond0 kvm01tap0 ----- # ip addr show ... 2: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond0 state UP qlen 1000 link/ether 00:25:90:6b:de:00 brd ff:ff:ff:ff:ff:ff 3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond0 state UP qlen 1000 link/ether 00:25:90:6b:de:00 brd ff:ff:ff:ff:ff:ff 5: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc mq master br0 state UP qlen 1000 link/ether 00:25:90:6b:de:00 brd ff:ff:ff:ff:ff:ff 7: kvm01tap0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP qlen 500 link/ether 52:fa:04:aa:fb:f1 brd ff:ff:ff:ff:ff:ff 6: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP link/ether 00:25:90:6b:de:00 brd ff:ff:ff:ff:ff:ff inet 213.145.98.98/24 brd 213.145.98.255 scope global br0 valid_lft forever preferred_lft forever ========== I.e. eth0 & eth1 are part of bond0, which in turn is joined into br0 together with tap0. Ethernet hw is Intel I350 using igb driver. This setup works with Linux kernel 2.6.32 & 3.2.9, but does not work with 3.2.0. It works with 3.2.0 if I manually turn promiscuous mode on for eth0 like this: ========== # ip link set dev eth0 promisc on ========== I've compiled igb.ko from http://sourceforge.net/projects/e1000/files/igb%20stable/3.4.7/ and it works fine. So, this driver (from 3.2.0 kernel) does not work: ========== # modinfo tmp/igb-k3.2.0.ko |grep ^version: version: 3.2.10-k ========== While this one from sourceforge works: ========== # modinfo tmp/igb-3.4.7.ko |grep ^version: version: 3.4.7 ========== HTH -- Teodor Milkov | System Administrator | ICDSoft Ltd. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org