Comment 3 for bug 1751815

Which value is rendered to None?

I tried to reproduce this with the undercloud.conf below, and I don't see the issue? Undercloud installs, and thinks look ok.

[stack@bug1751815 ~]$ rpm -q instack-undercloud
instack-undercloud-8.2.1-0.20180220181914.529796b.el7.centos.noarch

[stack@bug1751815 ~]$ cat undercloud.conf
[DEFAULT]

undercloud_hostname = bug1751815.lab.example.com

net_config_override = net-config-override.json

[stack@bug1751815 ~]$ cat net-config-override.json
"network_config": [
 {
  "type": "ovs_bridge",
  "name": "br-ctlplane",
  "ovs_extra": [
   "br-set-external-id br-ctlplane bridge-id br-ctlplane"
  ],
  "addresses": [
    {
      "ip_netmask": "{{PUBLIC_INTERFACE_IP}}"
    }
  ],
  "routes": {{SUBNETS_STATIC_ROUTES}},
  "mtu": {{LOCAL_MTU}}
}
]

[stack@bug1751815 ~]$ sudo grep -R none /etc/puppet/hieradata/
[stack@bug1751815 ~]$ sudo grep -R None /etc/puppet/hieradata/

5: br-ctlplane: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN qlen 1000
    link/ether f2:dc:59:34:0e:41 brd ff:ff:ff:ff:ff:ff
    inet 192.168.24.1/24 brd 192.168.24.255 scope global br-ctlplane
       valid_lft forever preferred_lft forever
    inet6 fe80::f0dc:59ff:fe34:e41/64 scope link
       valid_lft forever preferred_lft forever

[root@bug1751815 ~]# json_reformat < /etc/os-net-config/config.json
{
    "network_config": [
        {
            "addresses": [
                {
                    "ip_netmask": "192.168.24.1/24"
                }
            ],
            "mtu": 1500,
            "ovs_extra": [
                "br-set-external-id br-ctlplane bridge-id br-ctlplane"
            ],
            "routes": [

            ],
            "type": "ovs_bridge",
            "name": "br-ctlplane"
        }
    ]
}

#############################################################################
Undercloud install complete.