var hostnames []string
		for _, i := range indexes {
			hostnames = append(hostnames, fmt.Sprintf("svc%d%s", i, svcSuffix))
		}
		addServiceByNames(ns, hostnames...)
	}

	addServiceInstance := func(hostname host.Name, indexes ...int) {
		for _, i := range indexes {
			s.MemRegistry.AddEndpoint(hostname, "http-main", 2080, "192.168.1.10", i)
		}