[openstack-dev] [Neutron] MTU configuration pain

Ian Wells ijw.ubuntu at cack.org.uk
Tue Jan 26 23:47:58 UTC 2016

As I recall, network_device_mtu sets up the MTU on a bunch of structures
independently of whatever the correct value is.  It was a bit of a
workaround back in the day and is still a bit of a workaround now.  I'd
sooner we actually fix up the new mechanism (which is kind of hard to do
when the closest I have to information is 'it probably doesn't work').

On 26 January 2016 at 09:59, Sean M. Collins <sean at coreitpro.com> wrote:

> On Mon, Jan 25, 2016 at 08:16:03PM EST, Fox, Kevin M wrote:
> > Another place to look...
> > I've had to use network_device_mtu=9000 in nova's config as well to get
> mtu's working smoothly.
> >
> I'll have to read the code on the Nova side and familiarize myself, but
> this sounds like a case of DRY that needs to be done. We should just set
> it once *somewhere* and then communicate it to related OpenStack
> components.
> --
> Sean M. Collins
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