[FS#714] ARP/Broadcast does not reach other clients in the same WLAN

[LEDE Bugs]

The following task has a new comment added:

FS#714 - ARP/Broadcast does not reach other clients in the same WLAN
User who did this - Peter Nyilas (dh-harald)

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I've same problem with Mikrotik hAP ac.
I'm using LEDE Reboot snapshot from master (currently: r4322-f500799)
Usually persist, when I try to ping/reach from 5GHz to 2.4GHz.

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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=714#comment2756