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

title	content_type	_build	stages
RelaxedDNSSearchValidation	feature_gate	list render never false	stage defaultValue fromVersion alpha false 1.32

Relax the server side validation for the DNS search string (.spec.dnsConfig.searches) for containers. For example, with this gate enabled, it is okay to include the _ character in the DNS name search string.