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Date: Sat, 13 Dec 2008 18:01:22 +0000
From: Bruce Simpson <bms@incunabulum.net>
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To: Goran Lowkrantz <goran.lowkrantz@ismobile.com>
References: <C882ECF018726481EDA359B3@[172.16.2.124]>	<20081209114723.GE33723@cdnetworks.co.kr>	<80D07D8C17DAC73D69DCDC9A@[172.16.2.124]>	<AF36DEA1E8494FE126472BC4@[172.16.2.128]>	<20081210071932.GD37837@cdnetworks.co.kr>
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Cc: pyunyh@gmail.com, stable@freebsd.org
Subject: Re: Regression in vr - not receiveing multicast
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Goran Lowkrantz wrote:
>>
>> Can you see ALLMULTI flag from the output of "ifconfig vr0"?
>>
> No ->
> # ifconfig vr0
> vr0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 
> 0 mtu 1500
>     options=284b<RXCSUM,TXCSUM,VLAN_MTU,POLLING,WOL_UCAST,WOL_MAGIC>
>     ether 00:00:24:c8:e0:9c
>     inet xxx.xxx.xxx.xxx netmask 0xfffffff8 broadcast xxx.xxx.xxx.yyy
>     media: Ethernet autoselect (100baseTX <full-duplex>)
>     status: active 

Only a client of the MROUTING socket-level API (e.g. mrouted, XORP, 
pimdd, pimsd) is able to cause the kernel to enable ALLMULTI on an 
interface by itself.

You will need to get a multicast routing daemon of some kind running to 
test this. mrouted is OK for testing very simple configurations, 
although it has been de-orbitted as far as the 'Net itself is concerned.

thanks
BMS