Comment 6 for bug 1690284

Shunli,

My understanding of the problem is that Kuryr has limitation of finding the neutron subnet based on provided information. See here: https://github.com/openstack/kuryr-libnetwork#limitations-1 . Normally, Zun will provide the cidr of the subnet (i.e. 10.0.0.0/24) to docker (and docker pass it to kuryr). If there are more than on subnets with that cidr, kuryr won't be able to tell which one is what we want. In this case, Zun will provide the uuid of the subnetpool so that kuryr could find the subnet within that subnetpool. This error occurred if the subnet doesn't have a subnetpool. Therefore, kuryr complained about the same cidr taken by another subnet.