[  512.943965] bond0: (slave eth0): making interface the new active one
[  512.944236] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.229460] bond0: (slave eth0): Releasing backup interface
[  517.377129] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.556288] bond0: (slave eth0): Releasing backup interface
[  521.594331] bond0 (unregistering): Released all slaves