def build_ap_info_pkt(self, layer_cls, dest):
        """Build a packet with info describing the current AP
        For beacon / proberesp use
        """
        return RadioTap() \
            / Dot11(addr1=dest, addr2=self.mac, addr3=self.mac) \
            / layer_cls(timestamp=0, beacon_interval=100,
                        cap='ESS+privacy') \
            / Dot11Elt(ID="SSID", info=self.ssid) \
            / Dot11EltRates(rates=[130, 132, 139, 150, 12, 18, 24, 36]) \
            / Dot11Elt(ID="DSset", info=chb(self.channel)) \
            / Dot11EltRSN(group_cipher_suite=RSNCipherSuite(cipher=0x2),
                          pairwise_cipher_suites=[RSNCipherSuite(cipher=0x2)],
                          akm_suites=[AKMSuite(suite=0x2)])