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Date:	Thu, 01 Mar 2007 13:58:33 -0800
From:	Jay Vosburgh <>
To:	Andy Gospodarek <>
cc:	Brian Haley <>,,,
	Jeff Garzik <>
Subject: Re: [PATCH 3/3] bonding: Improve IGMP join processing 

Andy Gospodarek <> wrote:

>On Thu, Mar 01, 2007 at 02:25:19PM -0500, Brian Haley wrote:
>> So forgive my naive question, but what would it take to make IPv6 work? 
>>  I know DAD fails on a test setup I have, but I haven't dug-into why 
>> this is (I can guess), and I'd like to see it working.  I'm willing to 
>> help, even if just to get it limping along.
>If we are easily able to differentiate between the multicast addresses
>in the mc_list as to which are for ipv4 and which are for ipv6 then it
>would be easy to call-out to something in the ipv6 mcast code when
>needed instead of always calling out to ipv4 code.

	Which covers multicast (at least for the failover case; I think
the regular support is already pretty address-independent).

	Additionally, the IP address tracking for the ARP monitor
(bond_glean_dev_ip) needs IPv6 address support.  I seem to recall that
there's an issue with the slaves each getting separate link local
addresses automatically assigned, but I haven't fooled with that in a
while.  There are likely other problems that would crop up during
serious testing.

	A characterization of what the IPv6 related problems are would
be a good place to start; I would expect that active-backup mode without
arp_monitor shouldn't be too difficult to make operable.


	-Jay Vosburgh, IBM Linux Technology Center,
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