[ovs-discuss] Over-mtu packets in GRE tunnel

[Jesse Gross]

On Wed, Oct 3, 2012 at 2:39 PM, Jeff Welsch <jeff at jeffwelsch.com> wrote:
> Jesse,
>
> Thanks for the response.
>
> I am actually not loading the ip_gre module and have created the gre0 interface with ovs-vsctl add-port br0 gre0 -- set interface gre0 type=gre options....
>
> I thought I had seen a note on the list about not using the ip_gre module.  Is that not the case, and should I be using that?  Then I suppose I could change the mtu for the gre0 interface in the kernel.

No, it's better to use OVS GRE.  However, are you sure that you have
the most recent kernel module loaded?  OVS hasn't had that behavior
for GRE in a very long time.