[  517.482949] bond0: (slave eth0): making interface the new active one
[  517.483015] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.694345] bond0: (slave eth0): Releasing backup interface
[  521.785481] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.980300] bond0: (slave eth0): Releasing backup interface
[  526.014302] bond0 (unregistering): Released all slaves