Network failure with xen/kvm while using round-robin bonding + bridging?

If anyone of you are facing complete network failure or unacceptable packet loss in guest communication while using RHEL5 for Virtualization using xen + bonding (only mode0/round robin) + briding, please refer redhat kbase to know how to solve or work around it. This can also be applicable for KVM virtualization in Fedora if public bridge is used for networking with bonding in mode0