netdev - Re: Fw: [Bug 18212] New: force_igmp_version ignored when a IGMPv3 query received (+1 line patch)

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Message-ID: <OF1A09F28B.15E7E7BC-ON8825779E.00741A65-8825779E.007540E3@us.ibm.com>
Date:	Tue, 14 Sep 2010 14:20:40 -0700
From:	David Stevens <dlstevens@...ibm.com>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	Herbert Xu <herbert@...dor.hengli.com.au>, netdev@...r.kernel.org,
	netdev-owner@...r.kernel.org
Subject: Re: Fw: [Bug 18212] New: force_igmp_version ignored when a IGMPv3 query
 received (+1 line patch)

netdev-owner@...r.kernel.org wrote on 09/10/2010 09:19:36 AM:

> 
> https://bugzilla.kernel.org/show_bug.cgi?id=18212
> 
>            Summary: force_igmp_version ignored when a IGMPv3 query
>                     received (+1 line patch)

> 
> Created an attachment (id=29512)
>  --> (https://bugzilla.kernel.org/attachment.cgi?id=29512)
> fix force_igmp_version v3 query problem
> 
> After all these years, it turns out that the
>     /proc/sys/net/ipv4/conf/*/force_igmp_version
> parameter isn't fully implemented.

        I don't think it's correct to send a v2 response to a v3
query in any case. The question for answering v3 queries was
whether to answer them with a v3 report, or to drop them and
ignore them when force_igmp_version==2. I chose to respond,
but I can see the case for dropping it too. I don't agree that
a v3 query should be answered with a v2 resport (a real v2
host would drop it).

                                                        +-DLS

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