return false
	}
	return len(newSvc.Spec.IPFamilies) < len(oldSvc.Spec.IPFamilies)
}

// Helper to get the IP family of a given IP.
func familyOf(ip string) api.IPFamily {
	if netutils.IsIPv4String(ip) {
		return api.IPv4Protocol
	}
	if netutils.IsIPv6String(ip) {
		return api.IPv6Protocol
	}
	return api.IPFamily("unknown")

	var validPrimaryIP, validSecondaryIP func(ip string) bool
	if len(kl.nodeIPs) == 0 || utilnet.IsIPv4(kl.nodeIPs[0]) {
		validPrimaryIP = utilnet.IsIPv4String
		validSecondaryIP = utilnet.IsIPv6String
	} else {
		validPrimaryIP = utilnet.IsIPv6String
		validSecondaryIP = utilnet.IsIPv4String
	}
	for _, ip := range podIPs {
		if validPrimaryIP(ip) {
			ips = append(ips, ip)
			break
		}
	}