[Openstack] [neutron][devstack]subnet created with wrong gateway
brian.haley at hpe.com
Mon Aug 22 19:09:50 UTC 2016
Yes, it uses the lowest for the gateway, I was using ".1" to denote this but
realize it might not have been the best example. I'm testing a patch now to
remove the '--gateway a.b.c.d' if it's not explicitly set since it isn't necessary.
On 08/22/2016 01:57 PM, Brent Troge wrote:
> Doesn't neutron use the first available host address in the subnet as the
> gateway? So if your cidr is 128/25 then neutron would default to 129 as the
> On Aug 22, 2016 9:54 AM, "Brian Haley" <brian.haley at hpe.com
> <mailto:brian.haley at hpe.com>> wrote:
> On 08/21/2016 08:40 PM, Tony Breeds wrote:
> On Sun, Aug 21, 2016 at 05:28:44PM +0530, Akilesh K wrote:
> I am using devstack for the first time and I see that it has created a
> subnet like below. The cidr and gateway do not match. Because of this
> devstack fails to run completely and fails while attaching a router
> to this
> subnet. Why is devstack doing this??
> You also need to specify NETWORK_GATEWAY in your local.conf:
> should match:
> FIXED_RANGE=10.4.128.0/20 <http://10.4.128.0/20>
> Our docs need updating as we recently switched from nova to neutron as the
> default network provider.
> What devstack should really be doing is defaulting the gateway to "",
> neutron will automatically use the ".1" of the subnet for the gateway if not
> told otherwise.
> I'll try and get a quick patch out today.
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