disabling/fixing "disabling multicast to unicast failed" errors ?

[michael-dev]

Hi,

> 		4.10.6-3.g0402808-default x86_64

this kernel version does not support multicast to unicast, you can 
ignore that error safely.

Kernel 4.10.6 is lacking mac80211 [4,5] support for multicast to unicast 
and requires the interface to be down for enabling/disabling multicast 
to unicast [1,2,3]. Hence the error message.
Both is fixed in 4.11-rc4.

Regards,
M. Braun


[1] 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/wireless/nl80211.c?id=b528414ca3b7b57f4f81b7ff207e6f8ffde89d2e
[2] 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/tree/net/wireless/nl80211.c?id=refs/tags/v4.10.6#n11817
[3] 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/net/wireless/nl80211.c?id=refs/tags/v4.11-rc4#n11932
[4] 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/tree/net/mac80211/cfg.c?id=refs/tags/v4.10.6
[5] 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/net/mac80211/cfg.c?id=refs/tags/v4.11-rc4