return
	}

	// make sure ip sets exists in the system.
	for _, set := range proxier.ipsetList {
		if err := ensureIPSet(set); err != nil {
			return
		}
		set.resetEntries()
	}

	// activeIPVSServices represents IPVS service successfully created in this round of sync
	activeIPVSServices := sets.New[string]()