Thu, May 29, 2014 at 09:27:16AM CEST, [email protected] wrote: >There has been a number incidents recently where customers running KVM have >reported that VM hosts on different Hypervisors are unreachable. Based on >pcap traces we found that the bridge was broadcasting the ARP request out >onto the network. However some NICs have an inbuilt switch which on occasions >were broadcasting the VMs ARP request back through the physical NIC on the >Hypervisor. This resulted in the bridge changing ports and incorrectly learning >that the VMs mac address was external. As a result the ARP reply was directed >back onto the external network and VM never updated it's ARP cache. This patch >will notify the bridge command, after a fdb has been updated to identify such >port toggling. > >Signed-off-by: Jon Maxwell <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
