Prechecks fail for certain interfaces

The interface defined in globals.xml is called br-mgmt, which is defined, on the hosts, as:

enp1s0f1 -\
            ---> bond0 ---> bond0.210 ---> br-mgmt
enp3s0 -/

br-mgmt being a bridged interface from bond0.210 vlan interface for bond0, which is in turn a bonding interface for eth0 and eth1, if I'm expressing myself correctly.

br-mgmt has an IP interface that is reachable from the lan, so properly configured. If, for testing purposes, I set network_interface to bond0 (which also has an IP address), prechecks work correctly. But when I set br-mgmt as designed, prechecks fails at the first check:

TASK [prechecks : Checking free port for Aodh API] *****************************
fatal: [openstack1]: FAILED! => {"failed": true, "msg": "ERROR! 'dict object' has no attribute u'ansible_br-mgmt'"}

Interfaces are defined as:

# interface br-mgmt configuration
auto br-mgmt
iface br-mgmt inet static
  address 192.168.210.25
  netmask 255.255.255.0
  bridge_ports bond0.210
  bridge_stp off

# interface bond0 configuration
auto bond0
iface bond0 inet static
  address 192.168.101.25
  netmask 24
  gateway 192.168.101.3
  hwaddress 76:ff:c8:e2:3e:4c
  bond-lacp-rate 1
  bond-miimon 100
  bond-mode 802.3ad
  bond-slaves none

# interface bond0.210 configuration
auto bond0.210
iface bond0.210 inet manual

# interface enp1s0f1 configuration
auto enp1s0f1
iface enp1s0f1 inet manual
  bond-master bond0
  bond-mode 802.3ad

# interface enp3s0 configuration
auto enp3s0
iface enp3s0 inet manual
  bond-master bond0
  bond-mode 802.3ad

Any idea why prechecks would fail in such an environment ?