[FS#13] Ath9k AP stays up for connected clients but doesn't show in scan on new ones

[LEDE Bugs]

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FS#13 - Ath9k AP stays up for connected clients but doesn't show in scan on new ones
User who did this: Felix Fietkau (nbd)
Status: Assigned -> Requires testing

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=13