var crypto/x509.ignoreCN

4 uses

	crypto/x509 (current package)
		verify.go#L22: var ignoreCN = !strings.Contains(os.Getenv("GODEBUG"), "x509ignoreCN=0")
		verify.go#L113: 		if !ignoreCN && !validHostnamePattern(c.Subject.CommonName) {
		verify.go#L117: 		if ignoreCN && validHostnamePattern(c.Subject.CommonName) {
		verify.go#L972: 	return !ignoreCN && !c.hasSANExtension() && validHostnamePattern(c.Subject.CommonName)