[  513.059120] bond0: (slave eth0): making interface the new active one
[  513.059201] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.278071] bond0: (slave eth0): Releasing backup interface
[  517.382157] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.559066] bond0: (slave eth0): Releasing backup interface
[  521.587880] bond0 (unregistering): Released all slaves