[  511.966719] bond0: (slave eth0): making interface the new active one
[  511.966840] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.178927] bond0: (slave eth0): Releasing backup interface
[  516.258356] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.405343] bond0: (slave eth0): Releasing backup interface
[  520.429261] bond0 (unregistering): Released all slaves