Can't capture the local wireless to wireless packet

I'm using the MT3000 model, latest firmware.

I setup the model as an AP router, and two wireless clients connect to the AP,.
The communication between the two clients is OK, but when I run tcpdump in the router(using the ssh), I can't see any packet between the two clients. The outbound traffic can be properly dumped, just no lan traffic.

I run the same case on another openwrt router(a linksys model), all the LAN traffic can be captured.

So I'm thinking some configuration is not right for my use case.

I've tried to disable the network acceleration, but no help for this case.

Any other suggestions from your side?

Hello,

In closed source firmware V4.7.0/4.7.4, AP mode, I also reproduce that on my MT3000, tcpdump ra0/rax0/br-lan did not have packets for wireless clients to access each other.

In open source firmware v4.7.0-op24, AP mode, there are packages that can be captured for the wireless clients access to access each other from wireless interface "rax0", which I emulated with ping:

Please try to install the 4.7.0-op24 firmware.

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