--- fixes: - A special case has been added to allow the creation of DHCP ports on Service Subnets that do not have the service type "network:dhcp", provided that the subnet has 'enable_dhcp' set to 'True'. This fixes the recurring error seen when neutron attempts to automatically create a DHCP port on a dhcp-enabled subnet after the subnet is created. See bug report `1636963 `_ for more details.