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

vyos@vyos# show interfaces
 bonding bond10 {
     member {
         interface eth0
         interface eth1
     }
 }
+bonding bond15 {
+    member {
+        interface eth0
+        interface eth1
+    }
+    vif 15 {
+        address 192.168.15.11/24
+    }
+    vif 3949 {
+        address 100.64.113.41/27
+    }
+}