Okay, with some help from upstream kvm (Anthony Liguori), we have a workaround for this issue in KVM itself.
Basically, Hardy's kernel does not support GSO (general segment offload). However, recent kvm/libvirt changes are now utilizing GSO.
In the KVM userspace code, we are going to disable this support for all guests until upstream designs a workable mechanism for the host sensing guest support for GSO and use it opportunistically. Uploading to Jaunty now.
Okay, with some help from upstream kvm (Anthony Liguori), we have a workaround for this issue in KVM itself.
Basically, Hardy's kernel does not support GSO (general segment offload). However, recent kvm/libvirt changes are now utilizing GSO.
In the KVM userspace code, we are going to disable this support for all guests until upstream designs a workable mechanism for the host sensing guest support for GSO and use it opportunistically. Uploading to Jaunty now.
:-Dustin