for _, msg := range validation.IsDNS1123Subdomain(ingress.Hostname) {
					allErrs = append(allErrs, field.Invalid(idxPath.Child("hostname"), ingress.Hostname, msg))
				}
				if isIP := (netutils.ParseIPSloppy(ingress.Hostname) != nil); isIP {
					allErrs = append(allErrs, field.Invalid(idxPath.Child("hostname"), ingress.Hostname, "must be a DNS name, not an IP address"))
				}
			}
		}
	}
	return allErrs
}