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Migrating a cold VM into a foreign subnet

Moving a running VM into a foreign subnet is Mission Impossible due to stale ARP entries (anyone telling you otherwise is handwaving over a detail or two - maybe their VM doesn't communicate with other VMs in the same subnet), but it's entirely feasible to migrate a cold VM into a foreign subnet if you can fix IP routing. Here's how you can do the trick with Enterasys switches.

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