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Message-ID: <504F3545.2070103@gmail.com>
Date:	Tue, 11 Sep 2012 14:57:41 +0200
From:	Ulrich Weber <ulrich.weber@...il.com>
To:	Vincent Bernat <bernat@...fy.cx>
CC:	netdev@...r.kernel.org
Subject: Re: IPv6 multipath routes

Hi Vincent,

there is no multipath support for IPv6 in the kernel.
RTA_MULTIPATH attributes are not parsed for IPv6.

Cheers
  Ulrich

On 09/06/2012 07:30 PM, Vincent Bernat wrote:
> Hi!
>
> It appears that "ip -6 route add" expects IPv4 addresses with nexthop directives:
>
> $ ip -6 route add to 2a01:c9c0:a1:982::/64 proto bird \
>     nexthop via fe80::ea39:35ff:febd:f9e dev bai2.2008 weight 1 \
>     nexthop via fe80::ea39:35ff:febd:fd6 dev bai1.2009 weight 1
> Error: an IP address is expected rather than "fe80::ea39:35ff:febd:f9e"
>
> The following patch fix this problem. However, it does not work. I now have:
>   RTNETLINK answers: No such device
>
> I have little knowledge of netlink so it is likely that my patch is
> buggy. However, I have found this problem by trying to debug what
> appears to be a valid netlink message refused by the kernel with the
> same error. Therefore, I suspect that there is also a bug in the kernel.
>
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