[OpenWrt-Devel] Regarding bridge multicast-to-unicast patch

[Hans Dedecker]

On Wed, Jun 3, 2015 at 8:50 AM, Steven Barth <cyrus at openwrt.org> wrote:
> Thanks for the quick reply.
>
>
> On 03.06.2015 08:26, Linus Lüssing wrote:
>> For IPv6 and a non-zero IPv4 source address it'll use the normal
>> IGMP/MLD querier election mechanism, meaning the one with the lowest
>> IP address will become the selected querier and the only one querying
>> on the link.
> So especially for v6 - since the kernel doesn't do IGMPv3 / MLDv2 - this
> effectively downgrades all the bridge links to ASM then (at least with a
> 50% chance, i.e. when the kernel wins due to lower MAC-address), which
> is a bit meh.
>
> Now remaining question is, does the kernel detect if there is a
> userspace-querier running on the same machine and silence itself then?
> If not we probably need to address this as well somehow.
I can confirm the bridge querier silence itself when an
userspace-querier is running at least for IGMP.
Did not check the MLD behavior yet.

Bye,
Hans
>
>
> Cheers,
>
> Steven
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