[FS#253] Multicast over wireless ceases to work properly after a while on ath9k with many clients connected

[LEDE Bugs]

The following task has a new comment added:

FS#253 - Multicast over wireless ceases to work properly after a while on ath9k with many clients connected
User who did this - Michael Marley (mamarley)

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They are indeed.  I can even see the RAs multicasted in response to the RSs I am sending from the wireless PC on the wired PCs, I just can't see any of the RAs from the wireless PCs.  They are still disappearing somewhere inside the wireless subsystem on the WAP because I can see them (with tcpdump) coming in on the WAP's wired interface and leaving through its wireless interface, but they never arrive at the clients.

And you still can't reproduce this with LEDE/OpenWRT and odhcpd sending the RAs because that program unicasts RAs in response to RSs, while radvd multicasts them.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=253#comment1071