On Thu, 2010-11-18 at 14:27 +0100, Philipp Herz - Profihost AG wrote: > Hi Alessandro, > > maybe it might help to take a closer look at each machines mac addresses. > > does this only happen on machines where vms are bound to more then one > bridge interface? problem it's not related to multiple interfaces on a vm, created a new vm with only 1 nic, stopped all other vm and generating enough traffic problem reappear > > i think the kernel logs this when "nicely" dropping packets that appear > to come from "itself". so check mac addresses and try to specify > different mac address when setting up your bridges. > > try to tcpdump network traffic between the affected nodes. > > Am 18.11.2010 13:34, schrieb Alessandro Bono: > > Hi > > > > I have a problem stacking bonding + vlan + bridge, typically my servers > > has two nic attached to two switch, one per nic, so I use bond in active- > > passive configuration, on top of this I create vlans and a bridge for vlan > > On ubuntu my network configuration are like this > > > > auto bond0 > > iface bond0 inet manual > > slaves eth0 eth1 > > bond_mode active-backup > > bond_primary eth0 > > bond_miimon 100 > > > > > > auto br18 > > iface br18 inet static > > address x.x.x.243 > > netmask 255.255.255.0 > > gateway x.x.x.254 > > bridge_ports bond0.18 > > bridge_fd 0 > > bridge_maxwait 0 > > > > > > auto br23 > > iface br23 inet manual > > bridge_ports bond0.23 > > bridge_fd 0 > > bridge_maxwait 0 > > > > and so on > > > > This machines are used as host for virtual machine, so vm are attached to > > one or more of these bridge > > If either eth0 and eth1 are up there are lots of this message in syslog > > > > bond0.18: received packet with own address as source address > > > > and only solution is to do > > > > ip link set eth1 down > > > > after this everything works without problem > > note that this problem appear in random way and "seems" related to > > presence of a vm that do bridge with his eth (normally for openvpn server) > > I have this problem either in xen and kvm intallation, 2.6.24 and 2.6.32 > > respectively. > > > > Googling I found lots of person with the same problem but without a clear > > solution, any hint how to solve/debug? > > > > thanks > > > > -- Cordiali Saluti Alessandro Bono -- To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
