On Tue, Aug 10, 2021 at 12:36:26AM +0000, Nagaraj Subas Chandrabose wrote: > I tried to set up a Linux based Variscite DART-6UL board WIFI as an access point using the hostapd.conf file and the hostapd(Ver: 2.9-rc0) application. In the hostapd.conf file, I made the following modifications: > However, the hostapd application seems to be not working if I attempt to set the channel to 100 and higher. > channel=100 > > The messages logged by the hostapd application are .. > Mode: IEEE 802.11a Channel: 100 Frequency: 5500 MHz > hostapd_handle_dfs_offload: iface->cac_started: 0 > hostapd_handle_dfs_offload: freq 5500 MHz requires DFS > hostapd_setup_interface_complete_sync: Wait for CAC to complete > Because the DFS-CAC is not yet up and running, the HOSTAPD application is unable to complete the AP/channel setup configuration. The system is unable to start/complete the DFS-CAC functionality despite having the DFS-CAC option enabled in the conf file. As a result, the hostapd programme is always waiting for the system to complete DFS-CAC configuration. Is there a problem with the hospad programme, or do I need to enable any other settings? Does the Wi-Fi hardware and driver used on that system support operation on DFS channels and in particular, radar detection? -- Jouni Malinen PGP id EFC895FA _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap