Creating a ipam via vnc_api resulted in addresses being allocated from the end of subnet range (addr_from_start attr is null)

[Vedamurthy Joshi]

R2.20 Build 53 Ubuntu 14.04 Juno

Below ipam was created with vnc_api as below. It is seen that addr_from_start is set to null which causes all the ips - default-gw, dns, host ips etc. to be allocated from the end of the IP address range.

We should have the addr_from_start set to true by default.

ipam_obj = NetworkIpam('ipam%s' % (vn_index), proj_obj, IpamType("dhcp"))
ipam_fq_name = ipam_obj.get_fq_name()
ipam_real_obj = vh.network_ipam_create(ipam_obj)

api_vn_obj = VirtualNetwork(name=vn_name, parent_obj=proj_obj)
vn_id = vh.virtual_network_create(api_vn_obj)
ipam = vh.network_ipam_read(fq_name=ipam_fq_name)
ipam_sn_lst = []
network, prefix = str(subnets[subnet_index]).split('/')
ipam_sn = IpamSubnetType(subnet=SubnetType(network, int(prefix)))
ipam_sn_lst.append(ipam_sn)
api_vn_obj.add_network_ipam(ipam, VnSubnetsType(ipam_sn_lst))
vh.virtual_network_update(api_vn_obj)

-------
{
    "network-ipam": {
        "display_name": "ipam1",
        "fq_name": [
            "default-domain",
            "p3",
            "ipam1"
        ],
        "href": "http://127.0.0.1:8095/network-ipam/564875ea-1942-47e1-b7aa-f80b95c8aab0",
        "id_perms": {
            "created": "2015-06-19T06:23:38.976287",
            "creator": null,
            "description": null,
            "enable": true,
            "last_modified": "2015-06-19T06:23:38.976287",
            "permissions": {
                "group": "KeystoneAdmin",
                "group_access": 7,
                "other_access": 7,
                "owner": "admin",
                "owner_access": 7
            },
            "user_visible": true,
            "uuid": {
                "uuid_lslong": 13234663183622908592,
                "uuid_mslong": 6217348933891540961
            }
        },
        "name": "ipam1",
        "network_ipam_mgmt": {
            "cidr_block": null,
            "dhcp_option_list": null,
            "host_routes": null,
            "ipam_dns_method": null,
            "ipam_dns_server": null,
            "ipam_method": "dhcp"
        },
        "parent_href": "http://127.0.0.1:8095/project/abae5981-2dfc-4f0d-8cdc-64c380f80165",
        "parent_type": "project",
        "parent_uuid": "abae5981-2dfc-4f0d-8cdc-64c380f80165",
        "uuid": "564875ea-1942-47e1-b7aa-f80b95c8aab0",
        "virtual_network_back_refs": [
            {
                "attr": {
                    "host_routes": null,
                    "ipam_subnets": [
                        {
                            "addr_from_start": null,
                            "allocation_pools": [],
                            "default_gateway": "100.1.1.14",
                            "dhcp_option_list": null,
                            "dns_nameservers": [],
                            "dns_server_address": "100.1.1.13",
                            "enable_dhcp": true,
                            "host_routes": null,
                            "subnet": {
                                "ip_prefix": "100.1.1.0",
                                "ip_prefix_len": 28
                            },
                            "subnet_name": null,
                            "subnet_uuid": "d2517c6f-dfe4-4052-b30f-c19a5bf71f84"
                        }
                    ]
                },
                "href": "http://127.0.0.1:8095/virtual-network/b88fa61e-d74f-403a-a0c2-a200abad5f93",
                "to": [
                    "default-domain",
                    "p3",
                    "scalevn1"
                ],
                "uuid": "b88fa61e-d74f-403a-a0c2-a200abad5f93"
            }
        ]
    }
}