[  512.662725] bond0: (slave eth0): making interface the new active one
[  512.662810] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.886071] bond0: (slave eth0): Releasing backup interface
[  516.995095] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.181843] bond0: (slave eth0): Releasing backup interface
[  521.212698] bond0 (unregistering): Released all slaves