[ovs-discuss] packet_type=legacy_l3 gre tunnel does not work

Gregory Rose gvrose8192 at gmail.com
Tue Nov 6 22:26:18 UTC 2018

On 11/6/2018 10:50 AM, Gregory Rose wrote:
> On 10/22/2018 1:37 PM, Gregory Rose wrote:
>> I was thinking there would be another subsequent call to set the 
>> parameters but evidently there is not.
>> Let me do some investigation and find out whether this is a bug or 
>> just something that was never
>> implemented.  If it was just never implemented then the documentation 
>> needs to be fixed up.
> Hi Yousong,
> I've completed my investigation and find that we do not create 
> APRHRD_IPGRE type devices with our GRE
> tunnels - we create a GRE tap device and that is an ARPHRD_ETHER type 
> device.  The documentation is in
> error concerning support for legacy_l3 packet types in the GRE kernel 
> datapath.
> I'll update the documentation to state such.  The legacy_l3 packet 
> type for GRE is supported in
> the user space datapath and I will note that as well in the updated 
> documentation.
> Thanks for pointing this out and helping us improve the accuracy of 
> our documentation.
> - Greg

A patch updating the documentation has been posted here:



- Greg

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