[FS#2716] After 1 day WiFi clients connected to 2.4 and 5 GHZ band in same network are isolated from each othe

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FS#2716 - After 1 day WiFi clients connected to 2.4 and 5 GHZ band in same network are isolated from each othe
User who did this - Kabachek (Kabachek)

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Yep, this is an actual problem.
After ~24 hours since the launch of the Wi-Fi interface, I try to ping my wifi printer from my notebook

c:> ping  -c 1 printer
PING printer []: 56 data bytes
Reply from []: Destination host unreachable

Some output from router

~# ubus call system board
{
        "kernel": "4.14.221",
        "hostname": "GW",
        "system": "MediaTek MT7621 ver:1 eco:3",
        "model": "Xiaomi Mi Router 3 Pro",
        "board_name": "xiaomi,mir3p",
        "release": {
                "distribution": "OpenWrt",
                "version": "19.07.7",
                "revision": "r11306-c4a6851c72",
                "target": "ramips/mt7621",
                "description": "OpenWrt 19.07.7 r11306-c4a6851c72"
        }
}

~# ubus call network.wireless status
{
        "radio0": {
                "up": true,
                "pending": false,
                "autostart": true,
                "disabled": false,
                "retry_setup_failed": false,
                "config": {
                        "path": "pci0000:00/0000:00:00.0/0000:01:00.0",
                        "legacy_rates": false,
                        "country": "VE",
                        "txpower": 20,
                        "htmode": "HT40",
                        "hwmode": "11g",
                        "channel": "auto"
                },
                "interfaces": [
                        {
                                "section": "wifinet1",
                                "ifname": "wlan0",
                                "config": {
                                        "encryption": "psk2",
                                        "mode": "ap",
                                        "key": "",
                                        "ssid": "",
                                        "isolate": false,
                                        "mode": "ap",
                                        "network": [
                                                "lan"
                                        ],
                                        "isolate": false
                                }
                        }
                ]
        },
        "radio1": {
                "up": false,
                "pending": false,
                "autostart": true,
                "disabled": false,
                "retry_setup_failed": true,
                "config": {
                        "path": "platform/10180000.wmac",
                        "legacy_rates": false,
                        "country": "VE"
                },
                "interfaces": [

                ]
        },
        "radio2": {
                "up": true,
                "pending": false,
                "autostart": true,
                "disabled": false,
                "retry_setup_failed": false,
                "config": {
                        "hwmode": "11a",
                        "path": "pci0000:00/0000:00:01.0/0000:02:00.0",
                        "htmode": "VHT80",
                        "channel": "auto",
                        "txpower": 20,
                        "country": "VE"
                },
                "interfaces": [
                        {
                                "section": "wifinet0",
                                "ifname": "wlan1",
                                "config": {
                                        "encryption": "psk2",
                                        "mode": "ap",
                                        "key": "",
                                        "ssid": "",
                                        "isolate": false,
                                        "network": [
                                                "lan"
                                        ],
                                        "mode": "ap",
                                        "isolate": false
                                }
                        }
                ]
        }
}

/sys/devices/virtual/net/br-lan/lower_eth0.1/brport/isolated=0
/sys/devices/virtual/net/br-lan/lower_eth0.1/brport/hairpin_mode=0
/sys/devices/virtual/net/br-lan/lower_eth0.1/brport/multicast_to_unicast=0
/sys/devices/virtual/net/br-lan/lower_wlan0/brport/isolated=0
/sys/devices/virtual/net/br-lan/lower_wlan0/brport/hairpin_mode=1
/sys/devices/virtual/net/br-lan/lower_wlan0/brport/multicast_to_unicast=1
/sys/devices/virtual/net/br-lan/lower_wlan1/brport/isolated=0
/sys/devices/virtual/net/br-lan/lower_wlan1/brport/hairpin_mode=1
/sys/devices/virtual/net/br-lan/lower_wlan1/brport/multicast_to_unicast=1


the logs are clear

~#grep wlan log/syslog | grep -v STA
~#grep kern log/syslog | grep wlan
~#

So, after i do /sbin/wifi command, the printer becomes available

c:> ping -n 1 printer
PING printer [] : 56 data bytes
64 bytes from []: seq=0 ttl=255 time=4.703 ms

--- printer ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 4.703/4.703/4.703 ms


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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=2716#comment9556

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