website/content/en/docs/reference/command-line-tools-reference/feature-gates/DefaultHostNetworkHostPortsInPodTemplates.md

title	content_type	_build	stages	removed
DefaultHostNetworkHostPortsInPodTemplates	feature_gate	list render never false	stage defaultValue fromVersion toVersion deprecated false 1.28 1.30	true

This feature gate controls the point at which a default value for .spec.containers[*].ports[*].hostPort is assigned, for Pods using hostNetwork: true. The default since Kubernetes v1.28 is to only set a default value in Pods.

Enabling this means a default will be assigned even to the .spec of an embedded PodTemplate (for example, in a Deployment), which is the way that older releases of Kubernetes worked. You should migrate your code so that it does not rely on the legacy behavior.