[openstack-dev] [Kuryr] Overlay MTU setup in docker remote driver

Liping Mao (limao) limao at cisco.com
Mon Aug 15 15:20:27 UTC 2016

Hi Kuryr team,

I open an issue in docker-libnetwork:

Appreciate for any idea or comments. Thanks.

Liping Mao

On 16/8/12 下午4:08, "Liping Mao (limao)" <limao at cisco.com> wrote:

>Hi Kuryr team,
>When the network in neutron using overlay for vm,
>it will use dhcp option to control the VM interface MTU,
>but for docker, the ip address does not get from dhcp.
>So it will not set up proper MTU in container.
>Two work-around in my mind now:
>1. Set the default MTU in docker to 1450 or less.
>2. Manually configure MTU after container start up.
>But both of these are not good, the idea way in my mind
>is when libnetwork Call remote driver create network,
>kuryr create neutron network, then return Proper MTU to libnetwork,
>docker use this MTU for this network. But docker remote driver
>does not support this.
>Or maybe let user config MTU in remote driver,
>a little similar with overlay driver:
>But now, seems like remote driver will not do similar things.
>Any idea to solve this problem? Thanks.
>Liping Mao
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