(Edit: See update post below. Not DFS related, reproduced on non-DFS channel, apparently fixed with a recent mt76 patch still present with master snapshot)
Running 23.05-rc2 on a netgear wax206. Had a 5GHz AP configured for channel 120, 40MHz, ax. Country is configured as US
.
It had been performing without issues up until 1-2 days ago, possibly around the time I switched from a previous 23.05 snapshot to -rc2.
The sporadic issue since then is that I appear to lost connectivity on a client of this AP, for about 1 minute, (very) occasionally. When I wait the ~1 minute, or when I manually force the client to reconnect to the same AP, connectivity is restored.
I thought of DFS, but the only related entries I can find are from hours before I saw this most recently - in fact this is from the time the unit was rebooted this morning:
# logread |grep -i dfs
Sat Jul 1 11:45:48 2023 daemon.notice hostapd: wl1-ap0: interface state HT_SCAN->DFS
Sat Jul 1 11:45:48 2023 daemon.notice hostapd: wl1-ap0: DFS-CAC-START freq=5600 chan=120 sec_chan=-1, width=0, seg0=118, seg1=0, cac_time=60s
Sat Jul 1 11:50:56 2023 daemon.notice hostapd: wl1-ap0: DFS-CAC-COMPLETED success=1 freq=5600 ht_enabled=1 chan_offset=-1 chan_width=2 cf1=5590 cf2=0
Sat Jul 1 11:50:57 2023 daemon.notice hostapd: wl1-ap0: interface state DFS->ENABLED
Seems reasonable at boot/AP start time.
Such a "silent traffic drop" of about 1 minute happened hours later. I can't see anything relevant in either the system log or dmesg
.
I have since (i.e. after this last "1 minute outage") switched the AP to channel 44, haven't experienced this issue since in the past few hours but it has been sporadic before anyway.
Am I right to be suspecting DFS here?