GL-MT300N-V2: client stays associated with a valid IP but all traffic dies periodically — only a client Wi-Fi toggle fixes it

Router
1

Environment

  • Device: GL-MT300N-V2 (Mango)
  • Firmware: 4.3.25
  • Wi-Fi: 2.4 GHz, AP mode, WPA2-PSK (AES), proprietary mt7628 driver
  • Affected client: iPhone (iOS) using a fixed/static private Wi-Fi MAC address

Symptom
Several times a day, at random intervals, the iPhone loses all connectivity through the router. While it is happening:

  • The client stays associated to the AP and keeps its valid DHCP lease / IP (e.g. 192.168.8.246).
  • No traffic passes in either direction — no internet, and the router's own admin/LuCI page at 192.168.8.1 is unreachable as well.
  • The only thing that restores it is toggling Wi-Fi off/on on the client (forcing a re-association). A router reboot is not required.
  • It always recurs later; it is not a one-off event.

Already ruled out

  • DHCP: the lease is valid during the outage
  • Client MAC: the private MAC is static (identical across the whole day), so this is not a rotating-MAC issue.
  • Config drift: the problem persists after a full factory reset AND after a complete reinstall via U-Boot.

I can provide the full logread output on request.

Has anyone had a similar experience or found a solution to this problem? Many thanks in advance.
Benni

2

Hi

Yes, if possible, please send us the device logs via private message after the issue occurs so that we can analyze them. It would also be helpful if you could include the iPhone's MAC address to assist with troubleshooting.

In addition, could you please clarify the following?

  1. Does this issue occur only on iOS devices, or do other devices experience it as well?
  2. When the issue occurs, is it only the iOS device that is affected, while other devices can still access the Internet normally through the MT300N's SSID?
  3. When the issue occurs, can other devices successfully ping the iPhone?
  4. Please SSH into the MT300N and run the following commands to check whether the iPhone's ARP entry appears normal at that time:
    ip neighbor
cat /proc/oui-tertf/term
How to export logs:

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How to send private messages:

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