PTR records are created and served for non-cluster IPs

[thockin]

apiVersion: v1
kind: Service
metadata:
  name: manual-1
spec:
  clusterIP: None
  ports:
  - port: 80

apiVersion: v1
kind: Endpoints
metadata:
  name: manual-1
subsets:
- addresses:
  - ip: 8.8.8.8
    hostname: foo
  ports:
  - port: 80

Reverse lookups for 8.8.8.8 now return foo.manual-1.default.svc.cluster.local.

We should probably never create reverse records except for service IPs and real pod IPs.

[thockin]

Related to #124

[bowei]

We can limit to check the ranges, but making it corresponds to a live pod will require watching all pods.

[sadlil]

@bowei https://github.com/kubernetes/dns/issues/124#issuecomment-321770570

[fejta-bot]

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[thockin]

/lifecycle frozen /remove-lifecycle stale