Why paravirtualized RHEL6 guest running on RHEL5 Xen host lose network connection for ~30 seconds after live migration?

Solution Verified - Updated -

Issue

When a paravirtualized RHEL6 guest running on RHEL5 Xen host is live migrated from one host to another host, guest becomes unreachable over the network for about 30 seconds. How can I resolve this problem?

Environment

Red Hat Enterprise Linux 5 Xen host
Red Hat Enterprise Linux 6 PV guest.

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