Comment 6 for bug 1812857

It's correct and expected behaviour
It's exactly what I want to have: bond0 uses mac address(9c:XX:XX:46:5d:91) of one physical interface.

Look at my config:
{'version': 1, 'config': [{'mtu': 1500, 'type': 'bond', 'subnets': [{'type': 'dhcp4'}], 'params': {'mac_address': '9c:XX:XX:46:5d:91', 'bond_up-delay': 250000, 'bond_mimon': 100, 'bond_xmit_hash_policy': 'layer2+3', 'bond_mode': '802.3ad'}, 'name': 'bond0', 'bond_interfaces': ['ens4', 'ens4d1']},

 {'type': 'physical', 'subnets': [], 'mac_address': '9c:XX:XX:46:5d:91', 'name': 'ens4'},
 {'type': 'physical', 'subnets': [], 'mac_address': '9c:XX:XX:46:5d:92', 'name': 'ens4d1'},]}