root@Meraki-2400:/# logread | grep -i CAC
Sat Jul 24 14:58:44 2021 daemon.info dnsmasq[1096]: started, version 2.85 cachesize 150
Sat Jul 24 14:59:04 2021 daemon.notice hostapd: wlan1-1: DFS-CAC-START freq=5300 chan=60 sec_chan=0, width=0, seg0=0, seg1=0, cac_time=60s
Sat Jul 24 15:22:25 2021 daemon.notice hostapd: wlan1-1: DFS-CAC-COMPLETED success=1 freq=5300 ht_enabled=1 chan_offset=0 chan_width=1 cf1=5300 cf2=0
Sat Jul 24 15:22:27 2021 daemon.notice hostapd: wlan1-1: DFS-PRE-CAC-EXPIRED freq=5300 ht_enabled=0 chan_offset=0 chan_width=0 cf1=5300 cf2=0
Sat Jul 24 15:22:29 2021 daemon.notice wpa_supplicant[1257]: wlan1: DFS-CAC-START freq=5300 chan=60 sec_chan=0, width=0, seg0=0, seg1=0, cac_time=60s
Sat Jul 24 15:22:37 2021 daemon.notice wpa_supplicant[1257]: wlan1: DFS-CAC-START freq=5300 chan=60 sec_chan=0, width=0, seg0=0, seg1=0, cac_time=60s
Sat Jul 24 15:23:39 2021 daemon.notice wpa_supplicant[1257]: wlan1: DFS-CAC-COMPLETED success=1 freq=5300 ht_enabled=1 chan_offset=0 chan_width=1 cf1=5300 cf2=0
Sat Jul 24 15:25:48 2021 daemon.notice hostapd: wlan1-1: DFS-CAC-START freq=5300 chan=60 sec_chan=0, width=0, seg0=0, seg1=0, cac_time=60s
Sat Jul 24 15:26:49 2021 daemon.notice hostapd: wlan1-1: DFS-CAC-COMPLETED success=1 freq=5300 ht_enabled=1 chan_offset=0 chan_width=1 cf1=5300 cf2=0
Sat Jul 24 15:26:51 2021 daemon.notice hostapd: wlan1-1: DFS-PRE-CAC-EXPIRED freq=5300 ht_enabled=0 chan_offset=0 chan_width=0 cf1=5300 cf2=0
Sat Jul 24 15:26:53 2021 daemon.notice wpa_supplicant[4984]: wlan1: DFS-CAC-START freq=5300 chan=60 sec_chan=0, width=0, seg0=0, seg1=0, cac_time=60s
Sat Jul 24 15:27:55 2021 daemon.notice wpa_supplicant[4984]: wlan1: DFS-CAC-COMPLETED success=1 freq=5300 ht_enabled=1 chan_offset=0 chan_width=1 cf1=5300 cf2=0