Belkin RT3200/Linksys E8450 WiFi AX discussion

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Been busy for the past couple of days so I wasn't able to reply you earlier. Here is the network config:

root@OpenWrt:~# cat /etc/config/network

config interface 'loopback'
        option device 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fdef::::/48'
        option packet_steering '1'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'lan1'
        list ports 'lan2'
        list ports 'lan3'
        list ports 'lan4'

config interface 'lan'
        option device 'br-lan'
        option proto 'static'
        option ipaddr '192.168.X.1'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option gateway '192.168.X.254'
        option broadcast '192.168.X.255'
        list dns '192.168.X.254'
        list dns '9.9.9.9'

config interface 'wan'
        option device 'wan'
        option proto 'dhcp'

config interface 'wan6'
        option device 'wan'
        option proto 'dhcpv6'

root@OpenWrt:~#

Also I have updated the Wireless config as per your suggestion:

root@OpenWrt:~#  cat /etc/config/wireless

config wifi-device 'radio0'
        option type 'mac80211'
        option path 'platform/18000000.wmac'
        option band '2g'
        option channel 'auto'
        option cell_density '0'
        option country 'IN'
        option noscan '1'
        option htmode 'HT40'
        option legacy_rates '1'

config wifi-iface 'default_radio0'
        option device 'radio0'
        option network 'lan'
        option mode 'ap'
        option key '*********'
        option ssid '2.4G_Network'
        option disassoc_low_ack '0'
        option encryption 'psk-mixed'

config wifi-device 'radio1'
        option type 'mac80211'
        option path '1a143000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0'
        option band '5g'
        option channel 'auto'
        option htmode 'VHT80'
        option cell_density '3'

config wifi-iface 'default_radio1'
        option device 'radio1'
        option network 'lan'
        option mode 'ap'
        option key '*********'
        option ssid '5G_Network'
        option encryption 'psk-mixed'
        option disassoc_low_ack '0'
        option short_preamble '0'

Still I am seeing the same issue with Wifi clients not able to communicate to each other. It seems like we are hitting a bug similar to this https://bugs.openwrt.org/index.php?do=details&task_id=714, https://forum.openwrt.org/t/clients-in-same-wlan-cant-reach-each-other/2501

Anyone else having issues similar to this? I only see ARP requests between the wireless networks but no ARP replies when pinging.

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Any idea what the issue could be related to?

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