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
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https://bugs.launchpad.net/bugs/785668
Title:
bonding inside a bridge does not update ARP correctly when bridged net
accessed from within a VM
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