adapters.Insert(n.mergePacketsReceivedErrorsData(packetsReceivedErrorsData)...)
	adapters.Insert(n.mergePacketsOutboundDiscardedData(packetsOutboundDiscardedData)...)
	adapters.Insert(n.mergePacketsOutboundErrorsData(packetsOutboundErrorsData)...)

	// delete the cache for non-existing adapters.
	for adapter := range n.adapterStats {
		if !adapters.Has(adapter) {
			delete(n.adapterStats, adapter)
		}
	}
}