[  513.355572] bond0: (slave eth0): making interface the new active one
[  513.355647] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.595607] bond0: (slave eth0): Releasing backup interface
[  517.695978] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.879806] bond0: (slave eth0): Releasing backup interface
[  521.906733] bond0 (unregistering): Released all slaves