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Wireless devices on the "Dumb AP" cannot communicate with wired devices in the "main router" and vice versa #23700

@rscarvalho90

Description

@rscarvalho90

Describe the bug

I have this Cudy WR3000 v1 running version 25.12.4 of OpenWRT that acts as "Dumb AP" and is cable connected with a Xiaomi Redmi Router AX6000 (Main Router) running the same version of OpenWRT.

Obs. 1: They are using 802.11r fast transition (plus 802.11k and 802.11v) with WPA2-PSK as encryption method with DAWN activated.
Obs. 2: The related error started after updated from version 24.10.4 to 25.12.4. Before this, they were working perfectly.

The Error

I have a Pi-hole instance running in a device connected via cable into the Main Router. Devices connected via wireless in the Dumb AP cannot connect with the announced DNS IP (192.168.1.19). I've tried to ping this device and another one that was cable connected with the main router and the response was address unreachable. Tried the opposite way, pinging the devices wireless connected in the Dumb AP from the wired devices connected in the main router and the same occurred.

If I ping from these wireless devices (2 Samsung Galaxy S23 Ultra) to other WiFi devices (connected into main router and dumb AP), the ping occurs normally. If these devices are connected in the main router, they can communicate with the cable connected devices normally too.

When I connect into Dumb AP via SSH, the ping from the AP and the wired devices occurs normally too. So the problem, apparently, is that in somewhere the wireless and the wired network were not totally bridge as expected.

Summary

Origin Device Destination Device Origin Connected Device Destination Connected Device Ping Result
Wireless Wired Dumb AP Main Router 🔴 Not OK
Wireless Wireless Dumb AP Main Router ✅ OK
Wireless Wireless Dumb AP Dumb AP ✅ OK
Dumb AP Wireless - Main Router ✅ OK
Wired Wireless Main Router Dumb AP 🔴 Not OK

OpenWrt version

r32933-4ccb782af7

OpenWrt release

25.12.4

OpenWrt target/subtarget

mediatek/filogic

Device

Cudy WR3000 v1

Image kind

Official downloaded image

Steps to reproduce

No response

Actual behaviour

Devices connected into Dummy AP via WiFi cannot communicate with devices connected via cable into the Main Router.

Expected behaviour

Devices connected into Dummy AP via WiFi can communicate with devices connected via cable into the Main Router.

Additional info

Behaviour didn't occur before upgrading from 24.10.4 to 25.12.4.

Diffconfig


Terms

  • I am reporting an issue for OpenWrt, not an unsupported fork.

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    Official ImageSupported Devicebugissue report with a confirmed bugrelease/25.12pull request/issue targeted (also) for OpenWrt 24.10 releasetarget/mediatekpull request/issue for mediatek target

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