The approach I'm taking to solve this problem is to implement the validate_fixed_network and validate_fixed_subnet - https://opendev.org/openstack/magnum/src/commit/a3276fd53b3a018522e3159137664d9808603514/magnum/api/attr_validator.py#L99
The approach I'm taking to solve this problem is to implement the validate_ fixed_network and validate_ fixed_subnet - https:/ /opendev. org/openstack/ magnum/ src/commit/ a3276fd53b3a018 522e3159137664d 9808603514/ magnum/ api/attr_ validator. py#L99