not returning fixed IP allocation error

[krypto]

Version: 4.1.0

Steps to Reproduce:
1.Create provider network,with following properties

Forwarding Mode: L2 only,
Disabled: DNS,DHCP,GW,Extend to DCGW

2. a. Allocate port with vnic_type direct,fixed_iP:172.16.78.1
   b. Allocate port with vnic_type direct,fixed_iP2:172.16.78.2
   c. Allocate port with vnic_type direct,fixed_iP3:172.16.78.3

Expected Result:
All ports with fixed IP allocated and is visible in neutron port-list and in contrail web-ui. Or show an error if fixed IP can't be allocated.

Actual Result:
No error for 2a,2b,2c but there is no fixed-IP against 2b (172.16.78.2)

neutron port-list --all |grep av556

| 66aca7f2-0dda-4f6c-b529-00b9ef8b376b | av556f3 | 02:66:ac:a7:f2:0d | {"subnet_id": "f3433e67-8f49-4eb0-bce4-e5ff2d832246", "ip_address": "172.16.78.3"} |
| 534993c5-d6be-4039-a077-d8354c9f154b | av556f | 02:53:49:93:c5:d6 | {"subnet_id": "f3433e67-8f49-4eb0-bce4-e5ff2d832246", "ip_address": "172.16.78.1"} |
| 19df52d6-c752-4fa0-b9d6-8e49c2eca86b | av556f2 | 02:19:df:52:d6:c7 | |

//Fixed IP missing//
neutron port-show av556f2

+-----------------------+---------------------------------------+
| Field | Value |
+-----------------------+---------------------------------------+
| admin_state_up | True |
| allowed_address_pairs | |
| binding:host_id | |
| binding:vif_details | {"port_filter": true, "vlan": "1239"} |
| binding:vif_type | hw_veb |
| binding:vnic_type | direct |
| created_at | 2018-12-06T02:26:20.873792 |
| device_id | |
| device_owner | |
| fixed_ips | |
| id | 19df52d6-c752-4fa0-b9d6-8e49c2eca86b |
| mac_address | 02:19:df:52:d6:c7 |
| name | av556f2 |
| network_id | bc084bed-d1e3-422a-ab16-23034fc44da7 |
| port_security_enabled | True |
| security_groups | 59f5f4cf-3430-426e-934e-0719a647da95 |
| status | DOWN |
| tenant_id | ddee26701005442aa6508cc42ea45254 |
| updated_at | 2018-12-06T02:26:20.897952 |
+-----------------------+---------------------------------------+

Contrail web-ui

https://pasteboard.co/HQpseQp.png