[ovs-discuss] OVS

Ammu ammukeerthu at gmail.com
Wed Mar 20 11:04:45 UTC 2019

Hi Pfaff,

Thank you for your response.

Here are the requirements you requested for:

[root at localhost ~]# uname -a
Linux localhost.localdomain 3.10.0-514.el7.x86_64 #1 SMP Tue Nov 22
16:42:41 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

[root at localhost ~]# ovs-vsctl show
    ovs_version: "2.7.0"


On Wed, Mar 20, 2019 at 6:56 AM Ben Pfaff <blp at ovn.org> wrote:

> On Tue, Mar 19, 2019 at 05:19:42PM +0530, Ammu wrote:
> >
> https://stackoverflow.com/questions/55223517/allow-df-not-to-be-set-on-gre-vxlan-tunnels
> That question reads:
>     I have created a bridge with a tunnel interface(be it either
>     vxlan/gre) and an internal interface. When incoming packets get
>     encapsulated with either vxlan/gre tunnel header, I don't want the
>     DF bit set on the outer IP layer of tunnelled packet.
>     Despite setting df_default tunnel option to False while creating the
>     tunnel interface, I get the DF bit set on the outer IP layer of the
>     tunnelled packet.
> Glancing through the userspace and datapath code in the tree, it looks
> to me like the DF setting propagates through the whole stack, so I'm
> surprised there's a bug.  Perhaps Greg can take a look at some point, if
> he has time.
> We probably need to know what version of OVS you're using, what version
> of the kernel you're running, and whether you're using the Linux kernel
> built-in version of the OVS kernel module or the one that is shipped
> with OVS itself.
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