On 13.01.24 16:58, e9hack wrote:
Am 13.01.2024 um 16:47 schrieb Felix Fietkau:
On 13.01.24 16:32, e9hack wrote:
Thanks, this does fix the exception. Now I see the reale error:

Sat Jan 13 15:52:30 2024 daemon.err hostapd: Could not set interface phy1-ap8 
flags (UP): Resource busy
Sat Jan 13 15:52:31 2024 daemon.err hostapd: Failed to add BSS 
(BSSID=xx:xx:xx:xx:xx:xx)
Sat Jan 13 15:52:31 2024 daemon.notice hostapd: nl80211: Failed to remove 
interface phy1-ap7 from bridge br-aaa: No such device
Sat Jan 13 15:52:32 2024 daemon.notice hostapd: nl80211: Failed to remove 
interface phy1-ap6 from bridge br-aaa: No such device
Sat Jan 13 15:52:32 2024 daemon.notice hostapd: nl80211: Failed to remove 
interface phy1-ap5 from bridge br-bbb: No such device
Sat Jan 13 15:52:32 2024 daemon.notice hostapd: nl80211: Failed to remove 
interface phy1-ap4 from bridge br-ccc: No such device
Sat Jan 13 15:52:33 2024 daemon.notice hostapd: nl80211: Failed to remove 
interface phy1-ap3 from bridge br-ddd: No such device
Sat Jan 13 15:52:33 2024 daemon.notice hostapd: nl80211: Failed to remove 
interface phy1-ap2 from bridge br-eee: No such device
Sat Jan 13 15:52:34 2024 daemon.notice hostapd: nl80211: Failed to remove 
interface phy1-ap1 from bridge br-aaa: No such device
Sat Jan 13 15:52:34 2024 daemon.err hostapd: Interface initialization failed

Is there a limition of AP's per device?

Yes. The limit is hardware/driver specific. What chipset are you using?


It is a TP-LINK Archer C7. 2.4G wifi is ath9k. I didn't see this issue with an 
Asus RT-AX53U based on mt7621.

ath9k can do 8 AP interfaces, mt7915 can do 16. That explains why you didn't see the issue on RT-AX53U.

- Felix

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