Users needed to test Wi-Fi stability on Linksys WRT3200ACM & WRT32X on OpenWrt 21.02

Installing and Using OpenWrt Network and Wireless Configuration
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so, I noticed one other issue with ARP on devices which are connected to the same WLAN after some time (~1day working).
But meanwhile ARP is working between devices connected to different interfaces(WLAN, Ethernet)

The picture is next:

  1. Devices connected to WLAN(5GHz) DO NOT respond to ARP requests from devices on the same WLAN(5GHz)
  2. Devices connected via ethernet respond to any ARP requests from WLAN(5GHz) or WLAN(2.4GHz) and vice versa!
  3. Devices connected to WLAN(2.4GHz) respond to ARP requests from devices connected to WLAN(5GHz)

@mmortal03 could it be related to the used master snapshot instead of 21.02?