POST to /api/ipam/prefixes/{pk}/available-ips/ API returns a /32 address rather than prefix's netmask

[pm17788]

Issue type

[ ] Feature request
[x] Bug report
[ ] Documentation
[ ] Housekeeping

Environment

• Python version: 3.5.4
• NetBox version: 2.3.4

Description

Given the following prefix definition:

{
  "id": 481,
  "family": 4,
  "prefix": "172.16.240.0/27",
  "site": {
    "id": 5,
    "url": "https://netbox/api/dcim/sites/5/",
    "name": "TEST_SITE",
    "slug": "TEST_SITE"
  },
  "vrf": null,
  "tenant": null,
  "vlan": null,
  "status": {
    "label": "Active",
    "value": 1
  },
  "role": {
    "id": 1,
    "url": "https://netbox/api/ipam/roles/1/",
    "name": "Production",
    "slug": "production"
  },
  "is_pool": false,
  "description": "pm17788 Testing POC. Prefix 1",
  "custom_fields": {
    "prefix_gateway": "172.16.0.10",
    "bond0": true
  },
  "created": "2018-03-13",
  "last_updated": "2018-06-22T11:58:02.105686Z"
}

Additionally, a device interface exists:

{
  "id": 6574731,
  "device": {
    "id": 370881,
    "url": "https://netbox/api/dcim/devices/370881/",
    "name": "server-0CC47ABB77FD",
    "display_name": "server-0CC47ABB77FD"
  },
  "name": "eth0",
  "form_factor": {
    "label": "1000BASE-T (1GE)",
    "value": 1000
  },
  "enabled": true,
  "lag": null,
  "mtu": 0,
  "mac_address": "0C:C4:7A:BB:77:FD",
  "mgmt_only": false,
  "description": "Interface 'eth0' on host 'server-0CC47ABB77FD'",
  "is_connected": false,
  "interface_connection": null,
  "circuit_termination": null,
  "mode": null,
  "untagged_vlan": null,
  "tagged_vlans": []
}

During the POST to https://netbox/api/ipam/prefixes/481/available-ips/ of the following JSON, the result returns the ip of /32 rather than the (expected) prefix's /27

{
  "prefix": 481,
  "interface": 6574731,
  "status": 2,
  "description": "Reserving IP on INT 6574731, DEV 370881"
}

{
  "id": 868650,
  "address": "172.16.240.2/32",
  "vrf": null,
  "tenant": null,
  "status": 2,
  "role": null,
  "interface": 6574731,
  "description": "Reserving IP on INT 6574731, DEV 370881",
  "nat_inside": null,
  "created": "2018-07-06",
  "last_updated": "2018-07-06T18:40:03.133753Z"
}

[pm17788]

Curiously, doing a GET to the same API endpoint returns IPs with the correct net mask:

[
  {
    "family": 4,
    "address": "172.16.240.2/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.3/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.4/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.5/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.6/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.7/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.8/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.9/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.10/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.11/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.12/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.13/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.14/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.15/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.16/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.17/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.18/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.19/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.20/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.21/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.22/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.23/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.24/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.25/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.26/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.27/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.28/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.29/27",
    "vrf": null
  },
  {
    "family": 4,
    "address": "172.16.240.30/27",
    "vrf": null
  }
]