kern/138666: [multicast] [panic] not working multicast through igmpproxy

[Andriy Syrovenko]

I have switched to 8-STABLE. Kernel does not seem to crash anymore,
however IGMP still does not work. tcpdump complains that outgoing IGMP
report and leave packets have incorrect checksum- it is always 0.
Though I'm not sure weather it is IGMP checksum or IP checksum that is
incorrect.

2009/12/7 Bruce Simpson <bms at incunabulum.net>:
> Andriy Syrovenko wrote:
>>
>> Is it planned to be MFCed to STABLE?
>> Or, could you possibly point me into the right revision in HEAD, so I
>> could merge and test it locally?
>>
>
> Actually I did already MFC most of my changes to stable/8, just not
> releng/8.0.
>
> There were a few things to do with IGMP packet checks which I rolled in to
> my last swathe of changes. If this is a purely IGMP related problem, those
> fixes should be enough to get going.
>
> On the other hand, you could try backing out the last few revs on
> ip_mroute.c where I've tried to clean up some of the legacy code and get it
> into modernity.
>
> I didn't turn up any problems with that code in my most recent testing (last
> March, when I committed them), but my testing was limited to my own LAN.
>
> The backtrace in the PR suggested a problem around m_freem(), this could be
> a problem with another call which uses the mbuf.
>