if endpointAddress == "" {
					endpointAddress = model.LocalhostAddressPrefix
				}
			} else if hostIP == model.PodIPv6AddressPrefix {
				for _, proxyIPAddr := range cb.proxyIPAddresses {
					if netutil.IsIPv6Address(proxyIPAddr) {
						endpointAddress = proxyIPAddr
						break
					}
				}
				// if there is no any IPv6 address in proxyIPAddresses
				if endpointAddress == "" {