Failed to disable ipv4 on eth0

[phoracek]

I was trying to drop ipv4 from eth0 and attach it to OVS bridge, but it failed with ipv4.gateway: gateway cannot be set if there are no addresses configured.

config.yaml:

interfaces:
- name: eth0
  type: ethernet
  state: up
  ipv4:
    enabled: false

nmstatectl set config.yaml output:

2018-12-06 21:57:38,531 root         DEBUG    Checkpoint /org/freedesktop/NetworkManager/Checkpoint/23 created for all devices: 60
2018-12-06 21:57:38,565 root         WARNING  IPv6 link local address fe80::5055:ff:fed1:5501/64 is ignored when applying desired state
2018-12-06 21:57:38,565 root         DEBUG    Connection settings for duplicate_settings:
id: eth0
iface: eth0
uuid: 4513218f-4a9e-4843-9c27-18138bcdc8f1
type: 802-3-ethernet
autoconnect: False
autoconnect_slaves: <enum NM_SETTING_CONNECTION_AUTOCONNECT_SLAVES_DEFAULT of type NM.SettingConnectionAutoconnectSlaves>
2018-12-06 21:57:38,567 root         DEBUG    Executing NM action: func=commit_changes_async, args=(True, <Gio.Cancellable object at 0x7f784af35730 (GCancellable at 0x7f783c0623a0)>, <function _commit_changes_callback at 0x7f784cb85ed8>, (<libnmstate.nm.nmclient._MainLoop object at 0x7f784af1c810>, <NM.DeviceEthernet object at 0x7f784af351e0 (NMDeviceEthernet at 0x1638490)>))
2018-12-06 21:57:38,572 root         ERROR    NM main-loop aborted: Connection update failed: error=nm-connection-error-quark: ipv4.gateway: gateway cannot be set if there are no addresses configured (7), dev=eth0/<enum NM_DEVICE_STATE_ACTIVATED of type NM.DeviceState>
2018-12-06 21:57:38,575 root         DEBUG    Checkpoint /org/freedesktop/NetworkManager/Checkpoint/23 rollback executed: dbus.Dictionary({dbus.String(u'/org/freedesktop/NetworkManager/Devices/14'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/1'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/3'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/2'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/12'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/13'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/10'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/11'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/4'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/17'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/6'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/7'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/8'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/9'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/18'): dbus.UInt32(0L), dbus.String(u'/org/freedesktop/NetworkManager/Devices/5'): dbus.UInt32(0L)}, signature=dbus.Signature('su'))
Traceback (most recent call last):
  File "/bin/nmstatectl", line 9, in <module>
    load_entry_point('nmstate==0.0.2', 'console_scripts', 'nmstatectl')()
  File "/usr/lib/python2.7/site-packages/nmstatectl/nmstatectl.py", line 54, in main
    return args.func(args)
  File "/usr/lib/python2.7/site-packages/nmstatectl/nmstatectl.py", line 147, in apply
    netapplier.apply(state, verify_change=args.verify)
  File "/usr/lib/python2.7/site-packages/libnmstate/netapplier.py", line 47, in apply
    _apply_ifaces_state(desired_state[Constants.INTERFACES], verify_change)
  File "/usr/lib/python2.7/site-packages/libnmstate/netapplier.py", line 64, in _apply_ifaces_state
    _edit_interfaces(ifaces_desired_state, ifaces_current_state)
  File "/usr/lib64/python2.7/contextlib.py", line 24, in __exit__
    self.gen.next()
  File "/usr/lib/python2.7/site-packages/libnmstate/netapplier.py", line 97, in _setup_providers
    raise ApplyError(mainloop.error)
libnmstate.netapplier.ApplyError: run execution