[  512.902322] bond0: (slave eth0): making interface the new active one
[  512.902401] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.079016] bond0: (slave eth0): Releasing backup interface
[  517.179626] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.363958] bond0: (slave eth0): Releasing backup interface
[  521.410009] bond0 (unregistering): Released all slaves