I can reproduce this just using lxc, which simply attaches an endpoint of a veth tunnel to the bridge. With balance-rr mode, i can't dhcp in the guest. With balance-alb, I can.
That means this is not actually qemu-kvm, but a bug in the kernel or (unlikely) ifenslave. ** Changed in: linux (Ubuntu) Status: New => Confirmed ** Changed in: qemu-kvm (Ubuntu) Status: Confirmed => Invalid ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- 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