local ip="${3}"

  local aliases
  aliases=$(gcloud compute instances describe "${name}" --project "${PROJECT}" --zone "${zone}" --flatten='networkInterfaces[0].aliasIpRanges[]' --format='value[separator=':'](networkInterfaces[0].aliasIpRanges.subnetworkRangeName,networkInterfaces[0].aliasIpRanges.ipCidrRange)' | sed 's/^://' | paste -s -d';' -)
  aliases="${aliases:+${aliases};}${ip}/32"

	// nodePortAddresses selects the interfaces where nodePort works.
	nodePortAddresses *proxyutil.NodePortAddresses
	// networkInterfacer defines an interface for several net library functions.
	// Inject for test purpose.
	networkInterfacer proxyutil.NetworkInterfacer

	// staleChains contains information about chains to be deleted later
	staleChains map[string]time.Time