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Ambiguous Host Network (2 matches found based on name)

Os: Centos 7
Container Orchestrator: Kubernetes

When server got rebooted , container could not come up with existing host network where as multiple host network automatically created with same name resulting a bulk failure of application
Manual intervention by deleting the network and restart the docker engine will resolve the issue , But i have below point that will help us to understand and RCA

Wants to know :

  1. Why this occur ?
  2. Reson behind this ?
  3. How to restrict ?
  4. Any impact after resolution ?