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CKA study material · question 785 of 1000

Which field determines a dual-stack Service's primary IP family?

  1. The order of entries in .spec.ipFamilies
  2. The value of .spec.ipFamilyPolicy
  3. The order of the API server's --service-cluster-ip-range values
  4. The address family of the first endpoint to register
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Answer: A. The order of entries in .spec.ipFamilies

The primary family is whichever appears first in .spec.ipFamilies. The field is only conditionally mutable: a secondary family may be added or removed, not freely reordered.

Source: IPv4/IPv6 dual-stack (Kubernetes) — Services

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