netdev - Re: Kernel Panic in IPv6 vxlan

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Date:	Wed, 27 Nov 2013 09:44:03 -0500
From:	Ryan Whelan <rcwhelan@...il.com>
To:	Fan Du <fan.du@...driver.com>
Cc:	netdev@...r.kernel.org, amwang@...hat.com
Subject: Re: Kernel Panic in IPv6 vxlan

That isn't required with IPv4- if you don't specify an interface with
IPv4, it looks like the system will route the multicast traffic via
routing.  Is this not an option with IPv6?  I might be
misunderstanding something?

thanks

On Wed, Nov 27, 2013 at 3:25 AM, Fan Du <fan.du@...driver.com> wrote:
> Hallo,
>
>
> On 2013年11月27日 05:41, Ryan Whelan wrote:
>>
>> I'm not sure if this is the right place to report this- please correct
>> me if I'm mistaken.
>>
>> When creating a vxlan interface with an IPv6 multicast group but not
>> specifying an underlying device, the kernel panics when the vxlan
>> interface is brought up.  This doesn't happen with an IPv4 multicast
>> group.  Linux 3.12.1 x86_64
>>
>> `ip link add vxlan0 type vxlan id 42 group ff0e::110`
>
>
> You forgot to attach vxlan0 to a physical netdev ;) try:
>
> ip link add vxlan0 type vxlan id 42 group ff0e::110 dev ethX
>
> This will work anyway.
>
> --
> 浮沉随浪只记今朝笑
>
> --fan fan
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