IPv4 Multicast MAC Address issues

[Peter Jeremy]

On 2014-Jan-01 12:03:04 -0800, John-Mark Gurney <jmg at funkthat.com> wrote:
>Peter Jeremy wrote this message on Wed, Jan 01, 2014 at 19:57 +1100:
>> I'm trying to use multicast on my home network for the first time and
>> have found an apparent anomoly in the destination MAC address.
...
>> FreeBSD shows that as the multicast MAC filter.  Unfortunately, it
>> seems that (at least on FreeBSD-10), the destination MAC address
>> uses the low 23 bits of the IP address of my default route.

>This is probably a bug, and I have confirmed this on:
>FreeBSD carbon.funkthat.com 11.0-CURRENT FreeBSD 11.0-CURRENT #4 r256870:258399M: Wed Nov 20 12:33:22 PST 2013     jmg at carbon.funkthat.com:/usr/src/sys/amd64/compile/lockprof  amd64

Thanks.  I've since checked 9.2/amd64 and it's OK there, so this is a
regression.  I've raised kern/185395.

-- 
Peter Jeremy
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