Default DNS allow NetworkPolicy in Kubernetes

This policy will allow DNS requests to be made in the namespace if the default deny policy was previously applied:

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: default-allow-dns
spec:
  podSelector: {}
  policyTypes:
  - Egress
  egress:
  - ports:
    - port: 53
      protocol: TCP
    - port: 53
      protocol: UDP