Actually, I may be wrong about this being a kernel issue. Are you always able to ping the remote host from the kvm host, even when you can't do so from the VM?
In addition to kvmhost's /etc/modprove.d/bonding.conf, can you also please provide the configuration info for the KVM vm? (If a libvirt host, then the network-related (or just all) xml info, or else the 'ps -ef | grep kvm' output). Also the network configuration insid the KVM VM. In particular, if the KVM VM has a bridge, that one would need to have stp turned on, but I doubt you have that. ** Changed in: qemu-kvm (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/785668 Title: bonding inside a bridge does not update ARP correctly when bridged net accessed from within a VM -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs