def METHOD_NAME(dn):
    """
    This parses the hostname from a dn designator. They look like this:
    topology/pod-1/node-101/sys/phys-[eth1/6]/CDeqptMacsectxpkts5min
    """
    pod = get_pod_from_dn(dn)
    node = get_node_from_dn(dn)
    if pod and node:
        return "pod-{}-node-{}".format(pod, node)
    else:
        return None