netdev - Re: ipv6 debugging

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Message-ID: <87mypygcol.fsf@szonett.ki.iif.hu>
Date:	Mon, 18 Feb 2008 22:46:50 +0100
From:	Ferenc Wagner <wferi@...f.hu>
To:	"Jorge Boncompte [DTI2]" <jorge@...2.net>
Cc:	<netdev@...r.kernel.org>
Subject: Re: ipv6 debugging

"Jorge Boncompte [DTI2]" <jorge@...2.net> writes:

> Ferenc Wagner <wferi@...f.hu> writes:
>
>> I'm kindly asking for some debugging tips with the following problem:
>> a machine is running Linux 2.6.24.2, several 802.1q VLAN-s over
>> active/backup bonding over two physical interfaces.  Everything is
>> allright, except for after a reboot, there's no IPv6, while IPv4
>> works.  The router's ARP(6) table is empty, the machine doesn't answer
>> ping6.  However, if I start tcpdump -i bond0 ip6, everything is
>> allright again.  There are some indications that after some period
>> without IPv6 traffic, the same can happen again.  Are there known
>> issues which can exhibit themselves like this?  Other very similar
>> setups don't show this erratic behaviour.
>>
>> I know that the above doesn't give a fully detailed picture, but
>> thought that I'd better ask before taking the setup into pieces.
>
> This sounds to me like the same problem that I was having with
> OSPF, I think ARP(6) uses multicast ethernet address too. Can you try
> if the patch below, that I sent Patrick McHardy some days ago, fixes
> your problem?

Hi Jorge,

Thank you very much!  Your patch indeed fixes my problem.  I hope the
fix will make it into a stable release soon!
-- 
Regards,
Feri.
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