linux-kernel - Re: bride: IPv6 multicast snooping enhancements

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Date:	Thu, 12 Feb 2015 12:41:17 +0100
From:	Linus Lüssing <linus.luessing@...3.blue>
To:	Vasily Averin <vvs@...allels.com>
Cc:	netdev@...r.kernel.org, bridge@...ts.linux-foundation.org,
	Stephen Hemminger <stephen@...workplumber.org>,
	"David S. Miller" <davem@...emloft.net>,
	linux-kernel@...r.kernel.org,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Cong Wang <amwang@...hat.com>
Subject: Re: bride: IPv6 multicast snooping enhancements

On Tue, Feb 10, 2015 at 04:59:09PM +0300, Vasily Averin wrote:
> I'm trying to fix ICMPv6 processing broken in OpenVZ after rebase to last RHEL6u6 kernel.
> After some unclear manipulation bridge begins to forward icmp6 NS (fe02::1) into wrong port,
> and at present I do not found the reason of this failure.

fe02::1 seems uncommon for ICMPv6 NS messages. Would you mind
making some dumps for ~10 minutes with tcpdump on all bridge ports
and the bridge interface itself with a filter "icmp6" and uploading the
result somewhere?

Also provide a dump from "bridge mdb show dev $bridge" please (if
possible - not sure whether that's available on the ancient 2.6.32
kernel as used on RHEL6u6).

Cheers, Linus
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