[  512.784417] bond0: (slave eth0): making interface the new active one
[  512.784483] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.017280] bond0: (slave eth0): Releasing backup interface
[  517.140268] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.376084] bond0: (slave eth0): Releasing backup interface
[  521.404114] bond0 (unregistering): Released all slaves