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Spin up two isolated network stacks on one box and make them talk. Walk me through namespaces and veth pairs.

Five commands separate people who have actually built this from people who read about it once. Here is the working sequence, plus the gotchas that break it.

Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.

Five commands separate people who have actually built this from people who read about it once. Here is the working sequence, plus the gotchas that break it.

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