// 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())
			}
		}