[  512.260201] bond0: (slave eth0): making interface the new active one
[  512.260286] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.507258] bond0: (slave eth0): Releasing backup interface
[  516.602134] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.794021] bond0: (slave eth0): Releasing backup interface
[  520.835978] bond0 (unregistering): Released all slaves