Open Stack

Since yesterday I'm getting a strange error when I click to see ipv6
subnets details on dashboard. The web interface says something wrong
happened.

In the logs I can see information about that on neutron-server.log and
error.log from apache (I'm using keystone integrated with apache).

For example, on web interface when I got the error with the req id
2bf6ec12-1c89-42d1-9bab-4aef5c9f5d2f.

neutron/neutron-server.log:2017-06-30 14:50:35.051 22871 INFO neutron.wsgi
[req-2bf6ec12-1c89-42d1-9bab-4aef5c9f5d2f
e85813733498d6d6b6678b77d4756aaddef55bba18166be7d3bc3a8d20a65fd8
769822d4bf984cfeb3ab910cec9fa5b3 - - -] X.X.X.X- - [30/Jun/2017 14:50:35] "*GET
/v2.0/subnetpools/prefix_delegation.json HTTP/1.1" 404 *266 0.364519

and

apache2/error.log:[Fri Jun 30 14:50:35.054953 2017] [wsgi:error] [pid
27494] Neutron server returns request_ids:
['req-2bf6ec12-1c89-42d1-9bab-4aef5c9f5d2f']

I've an ipv6 subnet with prefix delegation on each project. When I use
"openstack subnet show <name>" I can see all information about it. The line
subnetpool_id has prefix_delegation as value and the prefix is well
configured (from dibbler).

These subnets were created with:

neutron subnet-create $PROJETO-net --name $PROJETO-subnet-ipv6 --ip_version
6 --ipv6_ra_mode dhcpv6-stateless --ipv6_address_mode dhcpv6-stateless
--dns-nameserver <address> *--use_default_subnetpool*

I don't know what happened. Everything was working. And, with theses logs I
don't know where to look.

Thanks for any help.

- JLC
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