OK, a couple of things. First, if you have a bridged AP then you can't have a DHCP server on that AP. It could easily hand out IP addresses that conflict with the rest of the network to which the AP is bridged unless you segment the DHCP pools for the router and your AP.
Secondly, I configured a system in bridged mode using the sdm hotspot plugin. It came right up and worked, and did not exhibit the behavior that you're seeing when I pulled the ethernet cable. Aside: It also doesn't enable a DHCP server in bridged mode.
So, first suggestion would be to disable dnsmasq on your AP and see how that works.
Secondly, I know that epoch1970 suggested using bridged mode, but I think that a routed AP is a simpler configuration (no br0, etc), more reliable, and less error-prone. But, your choice, of course.
One last point. I noticed this in your log. Probably not part of your issue, but it's typically a red flag to address.
Secondly, I configured a system in bridged mode using the sdm hotspot plugin. It came right up and worked, and did not exhibit the behavior that you're seeing when I pulled the ethernet cable. Aside: It also doesn't enable a DHCP server in bridged mode.
So, first suggestion would be to disable dnsmasq on your AP and see how that works.
Secondly, I know that epoch1970 suggested using bridged mode, but I think that a routed AP is a simpler configuration (no br0, etc), more reliable, and less error-prone. But, your choice, of course.
One last point. I noticed this in your log. Probably not part of your issue, but it's typically a red flag to address.
Code:
Aug 13 21:46:37 raspberrypi kernel: hwmon hwmon2: Undervoltage detected!Statistics: Posted by bls — Tue Aug 13, 2024 9:56 pm