proxyInfo, err := proxy.GetProxyInfo(client, istioNamespace)
		if err != nil {
			log.Error(err)
			continue
		}
		for _, pi := range *proxyInfo {
			sets.InsertOrNew(proxyVersionsMap, revision, pi.IstioVersion)
		}
	}
	for revision, vmap := range proxyVersionsMap {
		for v := range vmap {
			proxyVersions[revision] = append(proxyVersions[revision], v)
		}
	}

		// Use the value 0 as a sentinel indicating that one of the destinations
		// in the Virtual Service does not specify a port for this host.
		pn := 0
		if port != nil {
			pn = int(port.Number)
		}
		sets.InsertOrNew(out, host, pn)
	}

	for _, h := range v.Http {
		for _, r := range h.Route {
			if r.Destination != nil {
				addDestination(r.Destination.Host, r.Destination.GetPort())
			}
		}