This issue is part of problem with deleting HA networks after deleting routers can be marked part of https://bugs.launchpad.net/neutron/+bug/1562892 and https://bugs.launchpad.net/neutron/+bug/1540271
This issue is part of problem with deleting HA networks after deleting routers can be marked part of https:/ /bugs.launchpad .net/neutron/ +bug/1562892 and https:/ /bugs.launchpad .net/neutron/ +bug/1540271