```
Image version: VyOS 1.3.0
Release train: equuleus
Built by: Sentrium S.L.
Built on: Sun 19 Dec 2021 12:59 UTC
Build UUID: ff458f8a-3ef7-453c-a7f9-4aeb6d03012e
Build commit ID: 2f691bb2f61e96-dirty
Architecture: x86_64
Boot via: installed image
System type: KVM guest
Hardware vendor: QEMU
Hardware model: Standard PC (i440FX + PIIX, 1996)
Hardware S/N:
Hardware UUID: 274413ad-2ec0-4691-9afd-361c5b011877
OSError: [Errno 16] Device or resource busy
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/libexec/vyos/conf_mode/interfaces-bonding.py", line 212, in <module>
apply(c)
File "/usr/libexec/vyos/conf_mode/interfaces-bonding.py", line 203, in apply
b.update(bond)
File "/usr/lib/python3/dist-packages/vyos/ifconfig/bond.py", line 424, in update
self.add_port(interface)
File "/usr/lib/python3/dist-packages/vyos/ifconfig/bond.py", line 284, in add_port
ret = self.set_interface('bond_add_port', f'+{interface}')
File "/usr/lib/python3/dist-packages/vyos/ifconfig/control.py", line 181, in set_interface
return self._set_sysfs(self.config, name, value)
File "/usr/lib/python3/dist-packages/vyos/ifconfig/control.py", line 165, in _set_sysfs
self._sysfs_set[name]['location'].format(**config), value)
File "/usr/lib/python3/dist-packages/vyos/ifconfig/control.py", line 130, in _write_sysfs
write_file(filename, str(value))
File "/usr/lib/python3/dist-packages/vyos/util.py", line 222, in write_file
raise e
File "/usr/lib/python3/dist-packages/vyos/util.py", line 216, in write_file
bytes = f.write(data)
OSError: [Errno 16] Device or resource busy
```