// This means that domain is updated, we should update
	// all bucket entries with new domain name.
	domainMissing := err == dns.ErrDomainMissing
	if dnsBuckets != nil {
		for _, bucket := range buckets {
			bucketsSet.Add(bucket.Name)
			r, ok := dnsBuckets[bucket.Name]
			if !ok {
				bucketsToBeUpdated.Add(bucket.Name)
				continue
			}